BBobop Tools

WaveForge2D wave equation simulator: discrete Laplacian propagation, reflective/absorptive/periodic boundaries, oscillator and pulse sources, wall drawing, 6 scenes (single/double slit, lens, ripple tank) PendulumChaosDouble pendulum chaos simulator: Lagrangian mechanics, RK4 integration, phase space plot, energy conservation, butterfly effect divergence tracker MorphogenReaction-diffusion simulator: Gray-Scott model, discrete Laplacian, 12 Turing pattern presets (spots/stripes/maze/mitosis/coral), 5 colormaps, interactive brush ChaosLabStrange attractor explorer: Lorenz, Rossler, Thomas, Aizawa, Chen + 3 more, RK4 integration, 3D rotation, speed/depth/time coloring FractalForgeMandelbrot/Julia set explorer w/ smooth coloring, deep zoom, companion Julia view, 7 palettes FlockLabBoids flocking simulation — Craig Reynolds' 3 rules (separation/alignment/cohesion) with configurable weights, spatial hash grid for O(n) neighbor lookup, view angle cone, predator chase/avoidance, wind forces, mouse attract/repel, trail rendering, directional triangles with speed-based coloring, boundary wrapping EpicycleLabFourier drawing machine — draw any closed shape, decomposes into rotating circles via hand-rolled Discrete Fourier Transform, watch epicycles reconstruct the drawing from frequency components, amplitude-sorted visualization, 7 parametric presets (heart/star/butterfly/trefoil/figure-8/triangle/square), frequency spectrum display, energy analysis AutomataLabWolfram elementary cellular automata explorer — all 256 rules with visual rule editor, space-time evolution, Wolfram classification (Class I-IV), notable rules (Rule 30 chaos, Rule 110 Turing complete, Rule 90 Sierpinski), 6 initial states, 5 color modes including age gradient and density, all-256 overview grid, play/step controls PhotonTraceCPU ray tracer — hand-rolled vector math, ray-sphere and ray-plane intersection, Blinn-Phong shading with specular highlights, recursive reflections with Fresnel/Schlick, refraction with Snell's law and IOR, shadow rays, gamma correction, 5 scene presets, configurable camera FOV/position, chunked progressive rendering, live mode ChromaForgeColor space explorer — RGB/HSL/HSV/CMYK/Lab/XYZ conversions, color wheel with saturation-lightness picker, harmony engine (complementary/triadic/analogous/split/tetradic/monochromatic), CIE 1931 chromaticity diagram with sRGB gamut, WCAG contrast checker, color blindness simulation StepSeqdrum machine sequencer — 8 synthesized voices, swing, velocity layers, pattern presets SDF Marcherreal-time ray marcher — sphere tracing through signed distance fields with soft shadows, AO, and Mandelbulb fractal Physics2Drigid body simulator — circles, boxes, polygons with SAT collision detection and impulse resolution GenPaintgenetic algorithm image evolution: evolve translucent shapes toward a target image using natural selection, crossover, mutation, 6 procedural targets, 4 shape types, load custom images, fitness graph, real-time diff view RayForgereal-time ray tracer with reflections, refraction (Snell's law + Fresnel), shadows, 6 scenes (classic/mirrors/glass/cornell box/planets/fractal), orbit camera, adjustable bounces/FOV/resolution, gamma correction, animation Navier-Stokesreal-time 2D fluid dynamics simulator with stable fluids solver, vorticity confinement, RGB dye injection, 5 visualizations, bloom glow Turinguniversal Turing machine — tape visualization, editable transitions, 7 programs: increment, palindrome, busy beaver, copy L-FloraL-system plant generator — Lindenmayer grammars grow fractal trees, ferns, flowers, Koch curves, dragon curves Penroseaperiodic tiling generator — kite-dart P2 and rhombus P3, Robinson triangle subdivision, golden ratio geometry SandSimfalling sand physics — 12 elements with real interactions: sand, water, fire, lava, acid, plants, gunpowder Hexcellhexagonal cellular automaton — 6-neighbor topology, multiple rulesets, painting, pattern library Gravity Wellorbital mechanics sandbox — place wells, launch particles, trace geodesics through potential fields Contourmarching squares topographic maps — procedural terrain with contour lines and filled elevation Kisswave interference — two sources approaching, superposition blooms where they meet Moireinterference pattern generator — overlapping grids create phantom curves from geometry Resonancedriven spring-mass system with normal modes and resonance detection WatershedHydraulic erosion sim — raindrop particles carve rivers into procedural terrain Trochoid EngineSpirograph curves — hypotrochoid, epitrochoid, rose, Lissajous, layered orbits SoundScapeAudio visual synth — keyboard plays notes, particles dance to frequency, beat patterns Fractal DiveMandelbrot/Julia/Burning Ship explorer — smooth coloring, auto-zoom, real-time Julia preview Cloth SimFabric physics — Verlet integration, spring constraints, tearing, wind Chaotic PendulumDouble pendulum chaos explorer — RK4 physics, ghost traces, butterfly effect Magnetic DipoleIron filings simulation -- magnetic field from bar magnets, drag and rotate, field lines and magnitude map Ant ColonyAnt colony foraging simulation -- pheromone trails, food sources, emergent pathfinding from simple stigmergy Electric FieldCoulomb field line tracer -- place charges, drag them, see field lines, arrows, potential and magnitude maps Brownian MotionStochastic random walk -- Box-Muller Gaussian steps, trails, MSD statistics, heatmap, connections Slime MoldPhysarum polycephalum simulation -- agents deposit and sense chemical trails, forming organic vein networks DLADiffusion-Limited Aggregation -- random walkers grow fractal crystal structures on contact, 6 color modes, 5 seed types LissajousParametric Lissajous curves with decay, color modes, animation RailroadRegex railroad diagram generator with hand-rolled parser FFTHand-rolled Cooley-Tukey FFT with drawable waveforms Rigid Body2D physics engine with SAT collisions, boxes, circles, presets WolframElementary cellular automata explorer with all 256 rules HoldingsLive portfolio tracker — draco API quotes, P&L, allocation pie chart, CSV export, localStorage persistence LandscapeProcedural terrain generator — Perlin noise, 7 palettes, 5 presets, 5 render modes, drag-rotate, HD export Typing TestWPM speed test — live accuracy tracking, 4 word modes, performance chart, Tab to restart ScalesMusic theory scale explorer — 18 scales, piano + guitar fretboard, audio playback BaseShiftNumber base converter — dec, hex, bin, oct, base36 — interactive bit display SnippetsCode snippet manager — 14 languages, tags, search, localStorage auto-save SpriteCraftPixel art sprite editor — pen, fill, mirror, circles — 36-color palette, PNG export WavePoolWave interference simulator — click to place sources, 4 color schemes, circular + plane modes PendulumGravity pendulum simulator — double pendulum chaos mode, drag interaction, energy stats AsciifyText to ASCII art — 5 hand-coded fonts, block, banner, slant, mini, doom styles CipherLabEncryption toolkit — Caesar, ROT13, Vigenere, Atbash, Morse, Binary + frequency analysis QuickDrawReaction time test — wait for green, measure reflexes, stats tracking, history display AutomataCellular automaton explorer — all 256 elementary rules, interactive bit editor, scrolling display WPM TestTyping speed test — live WPM & accuracy tracking, history, 15-120s modes KScopeMirror drawing tool — 2-24 segments, glow brush, 8 colors, PNG export TimeForgeInteractive timeline builder — add events, sort by date, color-coded, localStorage MarkovMarkov chain text generator — configurable order, chain visualization, 4 presets VoronoiVoronoi diagram generator — 3 distance metrics, 5 color schemes, animation mode ArpeggioMusical arpeggio generator — 10 chord types, 4 wave shapes, BPM control, visualization BoidsReynolds flocking simulation — cohesion, alignment, separation, predator mode GridLockSliding puzzle — 3x3, 4x4, 5x5 grids, move counter, timer, best score tracking DiffViewText diff comparison — LCS algorithm, side-by-side view, addition/deletion highlighting FireworksParticle fireworks display — click to launch, auto mode, gravity & trail controls SpringNetSpring-mass network physics — grid/circle/chain/bridge, stiffness & damping controls PixelSortPixel sorting glitch art — sort by brightness/hue/saturation, h/v/d directions, threshold DrumPadDrum machine with 8 synth drums, keyboard mapping, 16-step sequencer, BPM control FlowFieldPerlin noise flow field — up to 10K particles, 5 color modes, scale & speed controls StackVMStack-based virtual machine — 27 instructions, labeled jumps, debugger, 5 program presets OrbitsGravitational orbit simulator — n-body physics, solar/binary/chaos/figure-8 presets MeshGen3D wireframe mesh generator — cube/sphere/torus/tetra/cylinder/möbius, rotation, zoom BitwiseBinary operations lab — AND/OR/XOR/NAND/NOR/XNOR, bit toggling, shift & rotate Conway3D3D Game of Life — rotating cube grid, adjustable size, step-through & auto-play SynthwaveRetro synthwave landscape — perspective grid, terrain, sun, 4 palettes, scanlines ReactionReaction time tester — visual/color/audio modes, history bars, best & avg stats GradientCSS gradient builder — linear/radial/conic, multi-stop editor, 10 presets, copy code Terrain3D3D terrain flyover — WASD flight controls, 3 color palettes, fog, wireframe mode Connect4Connect Four vs AI — minimax with alpha-beta pruning, 3 difficulty levels StarfieldParallax starfield — warp drive mode, speed/count/depth controls, 5 color themes DoublePendulumDouble pendulum chaos — adjustable lengths/masses/gravity, trail, multi-pendulum mode FourierFourier series visualizer — epicycle animation, square/saw/triangle/pulse waves SnakeClassic Snake game — WASD/arrows, wrap-around, 3 speeds, score tracking, pause ErosionHydraulic erosion sim — droplet-based erosion on diamond-square terrain, colored heightmap WordCloudWord cloud generator — spiral placement, stop-word filtering, 4 color schemes, export RaycastWolfenstein-style raycasting engine with textured walls and minimap SudokuPuzzle generator and solver with 3 difficulty levels HarmonographPendulum art generator with frequency and damping controls HexViewHex editor and viewer with search and byte inspection Langton AntEmergent cellular automaton with multi-state rules VoronoiLabVoronoi tessellation generator with animation and palettes IsometricVoxel world builder with terrain and city generators PlasmaAnimated procedural plasma color field with palettes FlockSimBoid flocking simulation with cohesion alignment separation CircuitSimLogic gate simulator with AND OR NOT XOR NAND NOR MetaballLiquid blob simulator with bouncing metaballs and glow DiffusionReaction-diffusion system with mitosis coral spot maze presets SpringsMass-spring physics with chain cloth bridge and web presets TreeGenProcedural fractal tree generator with wind and leaf styles PendulumWavePhase oscillation pendulum wave with side top and 3D views CryptoLabClassical cipher suite with Caesar Vigenere ROT13 brute force TilesProcedural tiling patterns with truchet herringbone islamic wave GravDrawGravitational particle art with attractors repulsors and trails InterferenceWave interference pattern visualizer with multiple sources SortVisSorting algorithm visualizer with 7 algorithms and step replay WaveFn CollapseWave function collapse tile generator with 5 tilesets BrainVMBrainfuck interpreter with memory visualization & presets Geodesic Sphere3D geodesic dome with subdivision, rotation & OBJ export Alchemy LabElement combination game with 90+ recipes to discover MandelbulbRay-marched 3D Mandelbulb fractal with lighting DNA Helix3D DNA double helix with base pairs & 3 render styles SandpileAbelian sandpile model showing self-organized criticality Timeline BuilderInteractive timeline with presets, themes & PNG export NoiseExplorerPerlin/Simplex/Worley/FBM noise visualization with palettes & animation PokerEvalTexas Hold'em hand evaluator with Monte Carlo simulation SpirographHypotrochoid & epitrochoid spirograph with presets & animation PlasmaOld-school demo-scene plasma effect with 6 palettes & blend modes PathfinderA*/Dijkstra/BFS pathfinding visualizer with maze generation SortViz8 sorting algorithms visualized with speed control & stats L-SystemL-System fractal generator with 8 presets & custom rules WaveformLabDual oscillator waveform lab with AM/FM/ring modulation N-BodyN-body gravity simulation with solar system & galaxy presets BezierEditInteractive bezier curve editor with t-parameter visualization PianoWeb Audio piano with 4 waveforms, keyboard input & recording ParticlesParticle system with 7 presets, forces & mouse interaction TicTacToeTic-tac-toe with minimax AI, 3 difficulty levels Cloth SimTearable cloth physics simulation with wind and gravity Radar SweepRadar/sonar sweep display with moving targets HexGrid MapHex grid map editor with terrain and kingdom generators ASCII ArtImage to ASCII art converter with color and charset options Modular SynthDual-oscillator synthesizer with filter, envelope, sequencer Rubik's Cube3D Rubik's cube with face turns, scramble, and drag rotation Maze 3DFirst-person 3D maze with raycasting, minimap, and exit goal Chemistry LabPeriodic table explorer with element search and properties Pixel PlanetProcedural pixel art planet generator with 6 biomes OrrerySolar system orrery with 8 planets, real orbital periods TetrominoClassic tetromino block-stacking game with ghost piece WaveSynth4-track waveform synthesizer with scope and WAV export Lorenz Attractor3D Lorenz attractor with adjustable parameters and rotation CityscapeProcedural cityscape generator — night, sunset, dawn, day MinesweeperClassic minesweeper with 3 difficulty levels and timer Timeline BuilderInteractive timeline builder with presets and export BeatBoxStep sequencer with 8 synth drums, 8/16/32 steps, BPM control PixelTextPixel text banner with 5x7 font, 4 styles, PNG download OrbitSimOrbital mechanics simulator, click to launch satellites SnakeClassic snake game with WASD/arrows, 3 speeds, score tracking ColorPickerProHSL wheel color picker with harmony, palettes, save swatches RosetteRosette pattern generator with petals, layers, twist, 5 palettes DitherLabImage dithering with Floyd-Steinberg, Atkinson, Bayer, 4 palettes CircuitSimCircuit simulator with resistors, batteries, LEDs, switches, wires ChessboardInteractive chess with move highlights, captures, flip board MatrixRain2Matrix rain with katakana/binary/hex/emoji, 5 color schemes EmojiMixerEmoji mixer with 5 categories, random mix, history tracking Spirograph2Spirograph with R/r/d controls, 5 palettes, animation mode GamepadTestGamepad tester with stick visualization, button mapping, axes PongClassic Pong with AI opponent, 2-player mode, ball trails ChessClockChess clock with bullet/blitz/rapid/classical presets, increment PerlinNoisePerlin noise explorer with octaves, 5 color maps, animation BreakoutBreakout with particle effects, levels, power bricks FluidSimNavier-Stokes fluid dynamics with dye injection WordleWord guessing game with keyboard feedback Mandala PainterSymmetry painter with mirror and rainbow modes Iso BuilderIsometric block builder with height levels Audio Vis 2Audio visualizer with mic input and 5 modes Gravity SandboxN-body gravity with collisions and presets SudokuSudoku puzzle with generator and 3 difficulties Photo BoothWebcam photo booth with 8 filters and gallery ASCII 3DRotating 3D wireframe shapes rendered in ASCII Timeline BuilderInteractive timeline builder with import/export MetronomeVisual metronome with tap tempo and time signatures Light TableMulti-layer light table for tracing and drawing Binary ClockBinary and BCD clock with glowing dots Tic-Tac-ToeTic-Tac-Toe with unbeatable minimax AI Gradient GenCSS gradient generator with multi-stop and presets SandpileAbelian sandpile model with toppling dynamics FlipbookFrame-by-frame flipbook animation maker Rune GeneratorElder Futhark rune generator with meanings Wave ShaperCombine waveforms with audio playback Maze GeneratorMaze generator with 3 algorithms and solver PianoTwo-octave piano with recording and playback Star ChartInteractive star chart with named stars Texture PaintProcedural texture generator with 6 types Word CloudWord cloud generator from text input Memory MatchCard matching game with themes and timer RPG CharacterD&D-style character sheet generator Particle ArtInteractive particle art with 5 modes Conway's Life v2Game of Life with patterns library and painting Chess BattleFull chess with move validation and capture Spiral DrawSpirograph-style drawing with color trails TetrisFull Tetris with hold piece and next preview TypewriterRetro typewriter with sound and export Synth LabSynthesizer with dual oscillators and ADSR Origami StudioPaper folding with step-by-step guides Hex WorldHexagonal tile world builder with terrains HarmonicsFourier harmonics visualizer with audio 500 FireworksGrand fireworks show celebrating 1135 tools RaycasterRetro 3D raycasting engine with WASD controls EcosystemPredator-prey ecosystem simulation Bitmap EditorBitmap sprite and pixel art editor PolyrhythmPolyrhythm visualizer with audio Celtic KnotsCeltic knot pattern generator Flag MakerFlag designer with symbols and layouts Orbital MechanicsKepler orbit mechanics simulator Bezier EditorBezier curve editor with SVG export MinimapProcedural minimap generator with biomes Compass RoseInteractive compass rose with bearings L-System FractalsL-System fractal generator with 8 presets Dungeon GeneratorProcedural dungeon map generator Cellular EvolutionElementary cellular automata explorer Synth3D3D wireframe shape renderer with 7 shapes Elixir LabPotion brewing alchemy laboratory Glyph ForgeBitmap font and glyph designer Time GridGitHub-style contribution heat grid TangramClassic tangram puzzle with 7 shapes Heat Map StudioInteractive heat map generator Word ChainerWord chaining game with scoring Terrain v4Terrain engine with 5 biomes and 3 views NebulaNebula generator with 5 types Ping PongPong game with AI opponent SlideshowSlideshow presentation maker Dithering LabImage dithering with 7 algorithms Tower DefenseTower defense game with 4 tower types Light Sim2D light and shadow simulator Rune CastRune casting divination tool Word LadderWord ladder puzzle game Flow Field v2Flow field with 5 modes and particle trails Crystal BallFortune-telling crystal ball with particle effects Snake AISnake with BFS pathfinding AI and race mode Color Blind SimColor blindness simulator for 8 vision types RoguelikeRoguelike dungeon crawler with combat and loot Wave MakerAdditive wave synthesis with presets and audio Texture GenProcedural texture generator with 10 types Circuit BoardPCB circuit board designer with auto-generate SteganographyHide messages in images using LSB encoding Minesweeper ProMinesweeper with 3 difficulties and chord clicking Planet ForgeProcedural planet generator with 6 types Synth Pad16-pad synth instrument with 4 kits GeosphereGeodesic sphere builder with subdivisions PaintballPaint splatter canvas with drips and blobs Timeline v3Interactive timeline builder with themes Radar ChartRadar/spider chart with multiple datasets Iso TilesIsometric tile map builder with height Wave Collapse v2WFC tile solver with 4 tilesets EmitterParticle emitter system with 8 presets Code RainMatrix-style code rain with 6 charsets Langton's AntLangton's ant with 6 rules and color themes Ant FarmAnt colony simulation with tunneling and food PixelateImage pixelation with 5 shapes and palettes Type SpeedTyping speed test with WPM and accuracy Hex LifeGame of Life on hexagonal grid CrosswordCrossword puzzle with 3 difficulty levels Fractal TreeRecursive fractal tree with 6 styles PathfinderPathfinding visualizer with 5 algorithms SokobanBox-pushing puzzle game with 6 levels Photo FilterPhoto filter lab with 12 effects and adjustments Mandelbrot v2Deep-zoom fractal explorer with 4 sets FlockingBoid flocking simulation with 3 styles Chladni PatternsChladni vibration pattern generator Block DropFalling block game with ghost and levels Rosette GenRosette and mandala pattern generator Electric FieldElectric field line and potential visualizer Glitch ArtImage glitch art generator with 7 effects TTT MasterTic-tac-toe with minimax unbeatable AI ColorWheelColor harmony wheel with HSL picker, 6 harmony modes, clickable wheel TangramV2Tangram puzzle with 5 shapes, drag/rotate/flip pieces, snap grid RxnTestReaction time test with visual/audio modes, stats tracking, ratings WormholeWormhole tunnel effect with 5 themes, speed/rings/twist controls BiomeGenProcedural biome map generator, 12 biomes, noise-based elevation/moisture MusicBoxStep sequencer music box, 5 scales, 4 waveforms, Web Audio synthesis StainedGlassStained glass generator with Voronoi cells, 6 palettes, 3 shapes SudokuProFull Sudoku game, 3 difficulties, timer, error checking, undo, keyboard nav ConvolutionLabImage convolution kernel lab, 11 presets, custom 3x3 matrix, real-time TerraMapTerrain map generator, 5 render styles, octave noise, sea level control WaveGenWave generator with 5 types, multi-wave overlay, audio playback KnotCraftTorus knot visualizer, 6 presets (trefoil/cinquefoil/star), 5 themes FlowSimFluid flow particle simulation, 5 field types, mouse-interactive ClockworkAnalog clock with gears, 5 styles (classic/minimal/roman/binary/neon) DNAHelixAnimated DNA double helix with base pairs, 4 color themes CellGrowCell growth simulation with mitosis, cancer, colony modes AquariumVirtual aquarium with fish AI, plants, bubbles, 4 scenes TypewriterV2Typewriter simulator with sound, 4 fonts, 4 themes, word count PrismLight prism spectrum dispersion, 4 modes, mouse-aimed beam SandArtFalling sand art with 6 palettes, brush controls, shake physics GalaxyGenProcedural galaxy generator with 5 types — spiral, elliptical, barred, irregular, ring KalScopeKaleidoscope v2 with 3-16 segments, 5 palettes, mouse-interactive patterns WordSearchWord search puzzle generator with 5 categories and 3 grid sizes RubiksCubeInteractive 3D Rubik's cube with face moves, scramble, drag rotation EpitrochoidEpitrochoid curve generator — spirograph, rose, cardioid, astroid, nephroid presets SnowGlobeInteractive snow globe with 4 scenes — tree, cabin, snowman, castle. Shake to swirl PixelDrawPixel art drawing canvas with palette, fill, pick, export PNG, adjustable grid SynthGridStep sequencer synth grid — 5 scales, 4 waveforms, tempo control, Web Audio BombSweepClassic minesweeper game — 3 difficulties, flag mines, timer, win detection AuroraSimAurora borealis simulator — 6 palettes, curtain physics, vertical rays, starfield. Tool #600 PendArtPendulum art generator — double/triple pendulum, harmonograph, Lissajous curves PyroShowFireworks display with chrysanthemum, willow, ring effects. Auto-launch or click LightsaberInteractive lightsaber effect — 6 crystal colors, glow, swing trails. Move mouse to swing ChessBotChess game against a simple AI bot — full piece movement, captures, pawn promotion MazeRunnerProcedural maze generator with fog of war — DFS generation, BFS solver, 4 sizes StarMapInteractive star constellation map — 8 constellations, named stars, pan/zoom CardFlipMemory card matching game — 3 difficulties, emoji pairs, move counter PhotoMosaicPhoto mosaic generator — 5 tile styles (square, circle, hex, ASCII, emoji) GlitchLabGlitch art lab — channel shift, corrupt, pixel sort, slice, RGB split effects CosmicWebCosmic web visualization — filament networks, galaxy clusters, gravitational lensing Mandala v3Procedural mandala generator — 4-24 symmetry, layers, 5 palettes, animation VolcaFlowVolcano lava flow simulator — erupting particles, sparks, cooling lava, smoke HologramHolographic 3D projection — cube, sphere, pyramid, torus, diamond, human. Glitch effect TypeBeatBeat pad drum machine — 8 synth pads, 4 kits, pattern recording, Web Audio synthesis RipplePoolWater ripple simulation — click to create ripples, 4 color modes, wave physics NeonRainMatrix-style neon rain — katakana characters, 5 color themes, speed/density control HexCellsHexagonal cellular automaton — life-like rules on hex grid, 4 rule sets TreeFractalFractal tree generator — adjustable depth/angle/ratio, 5 styles including sakura BubbleverseBubble physics playground — spawn, pop (split/explode/chain), collision, gravity WaveRideWave surfing visualization — surfer rides procedural waves, 4 ocean scenes StormCellThunderstorm simulator with lightning bolts, rain, clouds, wind DiceForge3D dice roller D4-D100, multi-dice, physics animation InkBlotRorschach inkblot generator with symmetrical random art WaveGuideEM wave propagation visualizer with interference patterns CardHouseBuild and collapse a house of cards with physics DustDevilDust devil and tornado particle simulator, 4 types GemSplitGem cutting simulator with facets and light refraction CodeSlideCode rain editor with syntax highlighting, 4 themes ThermoGridInteractive heatmap generator with diffusion and palettes SonicWaveSound wave visualizer with frequency and amplitude controls GlowPaintNeon glow painting canvas with particles and effects CanyonFlyCanyon flythrough with time-of-day, pseudo-3D perspective VortexHoleVortex black hole with spiral, tunnel, singularity modes PrismLabLight prism simulator splitting white light into spectrum SandCastleBuild sandcastles on the beach with towers and moats CrystalCaveCrystal cave explorer with gem types and flashlight SteamEngineSteam engine with flywheel, piston, throttle and pressure PendClockPendulum grandfather clock with real-time display GalaxyWarGalaxy space shooter, waves of enemies, mouse controls PaperFoldOrigami step-by-step: crane, boat, butterfly, frog, star AntHillAnt colony simulator with pheromone trails, food gathering, and emergent swarm behavior CloudscapeProcedural cloud generator with cumulus, stratus, cirrus, storm types and 4 times of day TypeRaceTyping speed test with WPM tracking, accuracy stats, 4 difficulty levels including code mode PixelWarPixel territory conquest with 4 factions, AI battle mode, paint to claim territory HarmoscopeCoupled pendulum oscillator with adjustable count, coupling, damping, and trail visualization CastleDefCastle defense tower game with arrow, cannon, frost towers, enemy waves, and gold economy MoonPhaseReal-time moon phase calculator with calendar view, date navigation, and lunar cycle display BitCountInteractive 8/16-bit binary counter with clickable LED bits, hex/octal/char display, shift ops TerraColorTerrain elevation colorizer with 5 palettes, procedural heightmap generation, and contour lines OceanFloorDeep ocean floor explorer with 5 zones, sea creatures, hydrothermal vents, and coral reefs LichFieldLichen growth simulator on stone with crustose, foliose, fruticose, leprose types and moisture OrbWeaverSpider web builder with radial and spiral silk strands, 4 web styles, animated spider MatryoshkaNesting doll animator with open/close mechanics, 4 design patterns, 6 nested layers DrumCircleDrum machine sequencer with 8 percussion instruments, Web Audio synthesis, swing, presets PeriscopeSubmarine periscope viewer with ships, birds, 4 ocean scenes, scope overlay, bearing compass Tesseract4D hypercube with real-time rotation, 3 projection modes, adjustable rotation planes RainMeterRainfall intensity simulator with 5 levels, wind, lightning, splash physics, accumulation meter QuiltWorkQuilt pattern generator with 6 block designs, color palette, mirror symmetry, click to rotate MicrotoneMicrotonal scale explorer: 12/19/24/31/53-TET, Just Intonation, Pythagorean, waveform viz GearBoxInterconnected gear mechanism with add/remove gears, 4 render styles, speed control, drag CoralReefUnderwater coral reef ecosystem with fish schools and bubbles TelegraphMorse code telegraph key simulator with sound and decode DominoDomino chain reaction with physics and pattern layouts ZiplineZipline ride through procedural terrain with HUD stats PrismWalkInfinite prism-colored corridors in 4 visual modes FlagWaveNational flag waving in wind with 9 country designs AbacusInteractive abacus calculator with clickable beads GyroscopeSpinning gyroscope with precession physics and trails VoxelArt3D voxel art editor with isometric view and color palette CometFallComet shower with atmospheric entry trails and fragments KalimbaThumb piano with 4 scales and Web Audio synthesis SandFortBeach sand fort builder with towers, walls, moat, and flags Aurora2Advanced aurora borealis with curtain, corona, arc, and storm modes MarblRunMarble run physics with procedural tracks and bouncing marbles OrbiterOrbital mechanics simulator with presets and n-body gravity PaperPlanePaper airplane launcher with distance tracking and wind ClockTowerClock tower with real-time analog clock, pendulum, and chimes TidePoolTide pool ecosystem with starfish, crabs, anemones, and urchins MirageDesert mirage simulator with oasis, city, water, and mountain illusions AntLionAnt lion pit trap simulator with predator-prey dynamics WindChimeWind chime with Web Audio synthesis and adjustable tubes HailStormHailstorm simulation with ice physics, lightning, and accumulation GeodeCrystal geode cross-section with 5 mineral types and spin MurmurStarling murmuration with adjustable flock cohesion and scatter HourglassSand hourglass timer with grain physics and flip animation Labyrinth2Maze explorer with fog of war, solution path, and procedural generation Sundial2Real-time sundial with shadow physics and 4 seasons TerrariumGlass terrarium ecosystem with plants, bugs, and moisture CathedralGothic cathedral interior with stained glass and candles StalactiteCave with stalactites, stalagmites, dripping water, and pool glow LighthouseLighthouse beacon with rotating beam, waves, weather modes SnowDriftSnow accumulation and drift simulation with wind and blizzard SeismographEarthquake seismograph recorder with magnitude triggers Windmill2Windmill with Dutch/Modern/Greek styles and wind control Origami2Interactive origami folding -- crane, boat, butterfly, frog BeehiveBeehive colony with worker bees, honey production, smoke Whirlpool2Water whirlpool vortex with ocean/plasma/ice palettes Prism3D3D rotating prism with light beam refraction and rainbow CarouselCarnival carousel with horses, lights, and spinning motion Milestone700700th tool celebration -- fireworks, particles, zero deps TectonicTectonic plate simulation -- divergent, convergent, transform SextantNavigation sextant with altitude measurement and sun tracking TrebuchetMedieval trebuchet siege engine with projectile physics Pendulum2Advanced pendulum -- single, double, Newton cradle, wave BlowfishPufferfish that inflates with spines, bubbles, underwater scene BonfireCampfire with flames, sparks, embers, log burning, wind Glacier2Glacier with seasons, calving icebergs, melting effects Compass2Brass compass with spinning needle, bearing readout, click nav LunarPhaseMoon phase viewer with 29.5-day cycle and crater detail SteamWorksSteam engine with pistons, wheels, pressure gauge, whistle TypesetDigital typewriter with click-clack sounds and word count SubmarineSubmarine dive sim with depth, pressure, fish, propeller Sandstorm2Desert sandstorm with dunes, wind particles, visibility Aquarium2Fish tank with plants, feeding, bubbler, multiple species PulsarRotating neutron star with beam sweep and pulse chart BellowsBlacksmith bellows pumping air into forge with embers MercuryPlanet Mercury -- surface, orbit, and solar transit views Kaleidoscope2Mirror-symmetric kaleidoscope with adjustable segments WeatherVaneWeather vane with wind direction, speed, and rooster AqueductRoman aqueduct with flowing water and adjustable arches MorseCodeMorse code transmitter with lamp, waveform, and alphabet Hourglass2Sand hourglass with flip, speed, and ice/ember styles Aurora3Aurora borealis v3 with mountains, stars, water reflection Gyroscope2Gyroscope with precession, nutation, gimbals, trails CandleFlickering candle flames with wax drips and wind SirenEmergency siren -- police, ambulance, fire, alert modes WaterwheelWaterwheel mill with flowing water and paddle buckets Terrarium2Glass terrarium with growing plants, bugs, condensation MagnetMagnetic field sim with iron filings and field lines SolarClockSundial with gnomon shadow tracking the sun arc CatapultMedieval catapult siege engine with target destruction DynamoElectric dynamo generator with coils, magnets, lightbulbs KilnPottery kiln with temperature stages and ceramic firing Prism4Crystal prism v4 — triangle, diamond, hex, star shapes BarometerAneroid barometer with weather predictions and history PinwheelColorful pinwheels spinning in the wind with flowers Astrolabe2Medieval astrolabe with rete, zodiac, and star pointers Geode2Crystal geode cave -- amethyst, quartz, citrine, ruby ThereminTheremin instrument -- mouse controls pitch and volume Turbine2Jet turbine engine -- front, side, cutaway views Telegraph v2Telegraph key with sounder, paper tape & wire poles ZoetropePre-cinema animation drum with running horse & filmstrip CrucibleMolten metal crucible with flames, sparks & pouring PercolatorCoffee percolator brewing with bubbles, steam & pour Bell JarVacuum bell jar with marshmallow, candle, bell & balloon FlywheelSpinning flywheel with RPM gauge, brake sparks & energy Metronome v2Wooden metronome with pendulum, tempo & time signatures JackhammerPneumatic jackhammer breaking concrete with debris & dust MbiraAfrican thumb piano with metal tines, scales & resonance 750 MilestoneThree-quarters of 1135 tools celebration with fireworks Siege RamMedieval battering ram siege engine against castle gate Kaleidoscope v3Gem kaleidoscope with mirrored segments & color palettes VoltmeterDigital multimeter with DC/AC volts, resistance & continuity Anvil v2Blacksmith anvil with hammer strikes, sparks & quench Paper GuillotinePaper guillotine cutter with falling blade & paper scraps Pulley SystemSingle, double & triple pulley with mechanical advantage Forge v2Blacksmith forge with bellows, coal bed & metal heating Waterfall v2Cascading waterfall with cliffs, pool, mist & rainbow Lava FlowVolcanic lava flow with eruptions, smoke & lava streams Carousel v2Merry-go-round with 8 horses, lights, canopy & music Microscope v2Compound microscope v2 with blood cells, plant cells, bacteria, crystals, zoom levels, and staining Wind VaneWeather vane with rooster, wind direction compass, gusts, and Beaufort scale force indicator DrawbridgeMedieval drawbridge with raising mechanism, chains, castle towers, sailing ship, and day/night Grain SiloGrain silo with fill/drain, wheat/corn/barley, dust particles, gauge, and tonnage display Sundial v3Sundial v3 with gnomon shadow tracking, Roman/Arabic/marks, latitude control, and day/night cycle Pendulum v3Pendulum v3 with simple, double (chaotic trail), Foucault rotation, and Newton cradle modes Bell TowerBell tower with swinging bell, 3 sizes, real audio chime, cross, and clear/sunset/night sky Oil RigOil well pump jack with walking beam, crank mechanism, underground cutaway, and barrel counter Lighthouse v3Lighthouse v3 with rotating beam, rocky cliff, waves, clear/stormy/foggy weather, and foghorn Turbine v3Turbine v3 with wind, steam (cutaway), and hydro modes, RPM gauge, and power output meter Trebuchet v2Trebuchet v2 with counterweight physics, stone/fire/plague ammo, power control, and castle target AnemometerCup and vane anemometer with spinning cups, Beaufort scale, analog gauge, and wind particles Barometer v2Aneroid and mercury barometer with weather forecast, pressure history graph, and unit conversion Richter ScaleRichter scale seismograph with earthquake simulation, building damage, ground cracks, and energy readout TheodoliteSurveying theodolite with crosshair viewfinder, landmarks, compass, horizontal/vertical angles, and marking Orrery v2Orrery v2 with 8 planets, moons, Saturn rings, zodiac ring, brass mechanical arms, and speed control Compass v3Compass v3 with military/maritime/explorer styles, decorative rose, lubber line, and declination Telescope v3Telescope v3 with Moon craters, Jupiter bands, Saturn rings, nebula, galaxy, zoom, and star tracking StabilizerGyro stabilizer with platform/ship/camera gimbal modes, artificial horizon, force vectors, and damping 780 Milestone1135 tools milestone celebration with fireworks, progress bar to 1000, and hash chain display WindsockAirport windsock with wind speed, flutter, gusts, extension indicator BallistaAncient ballista siege weapon with bolt firing, tension, angle control WaterWheel v2Overshot and undershot water wheel with mill, particles, power output Abacus v2Chinese and Japanese abacus with clickable beads, 13 columns, value display Sextant v2Celestial navigation sextant with sun, polaris, moon, telescope view PlumbBobPlumb bob with pendulum physics, spirit level, wall tilt, true vertical SpiritLevel v2Spirit level with horizontal, vertical, 45-deg, bulls-eye bubble vials Protractor v2360-degree protractor with draggable arms, deg/rad, trig values Caliper v2Digital vernier caliper with outer, inner, depth modes, mm/inch SandblasterSandblasting cabinet with rust removal, grit sizes, pressure gauge Anvil v3Blacksmith anvil with hammer strikes, sparks, heat coloring, quench SmelterBlast furnace smelting with ore types, molten metal tapping, slag RetortAlchemical retort distillation with bent neck, vapors, collection flask DistillerCopper pot still with swan neck, condenser coil, spirit distillation Centrifuge v2Lab centrifuge with 8 tubes, RPM tachometer, sample separation, g-force Lathe v2Wood turning lathe with cutting tool, wood profile shaping, DRO Kiln v2Ceramics kiln with pots, glazes, pyrometric cones, firing schedule Forge v3Blacksmith coal forge with bellows, embers, metal heating, quench CupolaFurnaceCupola furnace for casting iron with blast, tapping, slag separation Milestone 800Eight hundred tools celebration with fireworks and progress timeline GrindstoneSpinning grindstone with tool sharpening, sparks, water trough, and abrasive wheel physics Anvil v4Blacksmith anvil v4 with hammer, weld, bend, draw operations and heat coloring Bellows v2Forge bellows v2 with single, double, and great bellows types, air particles, and fire TongsBlacksmith tongs with flat jaw, V-bit, bolt, wolf jaw, and scrolling types Hammer MillIndustrial hammer mill with spinning rotor, hammers, feed hopper, and screen grate Trip HammerWater-powered trip hammer with tilt, helve, and stamp mill modes Drop ForgeDrop forge with falling hammer, die impression, shockwave, and impact energy calculation Rolling MillHot rolling mill with adjustable gap, stock feeding, and reduction percentage Wire DrawingWire drawing through progressive dies with coil, lubricant, and take-up drum Draw PlateDraw plate with 32 graduated holes, 6 cross-section shapes, and pull simulation Bunsen BurnerBunsen burner with adjustable gas/air ratio, blue oxidizing and yellow luminous flames Erlenmeyer FlaskErlenmeyer flask with reagents, swirling, heating, bubbles, and graduation marks MicropipetteMicropipette P10-P1000 with aspirate/dispense, volume display, and tip types SpectrometerEmission spectrometer with H, He, Na, Hg, Ne samples and real spectral line data Gel ElectrophoresisGel electrophoresis with 6 lanes, DNA ladders, band migration, and staining Gas ChromatographGC-FID with sample injection, oven temperature, retention times, and chromatogram RefractometerAbbe refractometer with eyepiece view, boundary line, samples from water to diamond ViscometerFalling ball viscometer with 6 fluids, temperature effects, and Stokes drag Bomb CalorimeterBomb calorimeter with combustion, temperature rise curve, and enthalpy calculation Analytical BalanceAnalytical balance with draft shield, tare, settling, 0.0001g readability PolarimeterPolarimeter simulator InterferometerInterferometer simulator Diffraction GratingDiffraction Grating simulator Fiber OpticFiber Optic simulator Laser AlignmentLaser Alignment simulator PhotometerPhotometer simulator Color Wheel v2Color Wheel v2 simulator Stroboscope v2Stroboscope v2 simulator ShadowgraphShadowgraph simulator Schlieren OpticsSchlieren Optics simulator Oscilloscope v2Oscilloscope v2 simulator Spectrogram v2Spectrogram v2 simulator Acoustic DuctAcoustic Duct simulator ResonatorResonator simulator Doppler Effect v2Doppler Effect v2 simulator Sonar v2Sonar v2 simulator EcholocationEcholocation simulator Reverb SimulatorReverb Simulator simulator Standing Waves v2Standing Waves v2 simulator Helmholtz ResonatorHelmholtz Resonator simulator Bernoulli PrincipleInteractive bernoulli principle visualization Venturi MeterInteractive venturi meter visualization Siphon SimulatorInteractive siphon simulator visualization Vortex DynamicsInteractive vortex dynamics visualization Laminar vs Turbulent FlowInteractive laminar vs turbulent flow visualization Turbulence SimulatorInteractive turbulence simulator visualization Pitot TubeInteractive pitot tube visualization ManometerInteractive manometer visualization Weir Flow CalculatorInteractive weir flow calculator visualization Hydraulic SystemsInteractive hydraulic systems visualization ConductionFourier heat conduction -- 2D diffusion grid with 5 materials Convection2Natural and forced convection -- buoyancy-driven particle flow Radiation2Planck blackbody spectrum -- Wien peak and Stefan-Boltzmann law HeatPipeHeat pipe phase-change transport -- vapor and liquid circulation ThermocoupleSeebeck thermocouple EMF -- 5 junction types, voltage curves BoltzmannMaxwell-Boltzmann speed distribution -- animated molecule box Carnot2Carnot cycle engine -- P-V and T-S diagrams with animation Entropy2Entropy scenarios -- gas expansion, mixing, melting, decay CalorimeterCalorimeter heat capacity -- drop sample into water bath HeatExchangerHeat exchanger -- counterflow, parallel, shell-and-tube types Capacitor2Capacitor RC circuit -- charge/discharge, E-field, energy storage InductorInductor RL transients -- magnetic energy, back-EMF, coil animation RLCRLC resonance circuit -- impedance, phasors, Bode response curve Transformer2Transformer turns ratio -- step-up/down, flux animation, power transfer EMFieldEM field visualizer -- point charges, dipoles, waves, vector fields SolenoidSolenoid magnetic field -- Ampere law, field lines, core permeability Coulomb2Coulomb force explorer -- drag charges, field lines, superposition DiodeDiode P-N junction -- Shockley equation, band diagram, I-V curve TransistorTransistor BJT/MOSFET -- output curves, operating regions, current flow DopplerShiftFrequency shift from relative motion with wavefronts and Mach cone ShockWaveSupersonic Mach cones, compression waves, and Rankine-Hugoniot relations FraunhoferFar-field diffraction patterns for single slit, double slit, circular, and grating SonarUnderwater acoustic detection with sweeping beam and ping wave propagation SoundWaveLongitudinal pressure waves showing compression and rarefaction Harmonics2Fourier synthesis building complex waveforms from sine components WavePacketGroup velocity, phase velocity, and dispersion in wave packets PhasedArrayBeam steering by progressive phase delay with far-field pattern AcousticResStanding waves in pipes, strings, and rooms at resonant frequencies TectonicsPlate tectonics with divergent, convergent, and transform boundaries Volcano2Volcanic eruption mechanics with magma chamber and pyroclastic ejecta GlacierGlacial flow with crevasses, moraines, meltwater, and U-shaped valleys CavernKarst cave formation with stalactites, stalagmites, and underground rivers GeothermalGeysers, hot springs, and geothermal power from Earths internal heat PangaeaContinental drift animation from supercontinent to modern configuration SedimentSedimentary layer formation, compaction, and the geological record MagmaMagma chamber convection, crystal fractionation, and pluton formation AquiferGroundwater flow, wells, water table, and cone of depression TitrationAcid-base neutralization with pH curve and equivalence point Molar VolumeAvogadro's law and ideal gas molar volume comparison pH ScalepH scale with H+/OH- concentration and common substances ElectrolysisSplitting compounds with electricity and ion migration Crystal GrowthCrystal nucleation, growth patterns, and supersaturation Gas LawsBoyle's, Charles's, and Avogadro's gas laws visualized CatalysisActivation energy, catalytic pathways, and enzyme kinetics PolymerizationChain polymerization, cross-linking, and molecular weight Ionic BondingElectron transfer, ion formation, and crystal lattice EnthalpyReaction energy diagrams, exothermic and endothermic pathways Exoplanet DetectionTransit photometry, radial velocity, and light curves for planet detection Lagrange PointsGravitational equilibrium points in two-body orbital systems MagnetarUltra-magnetic neutron star with extreme field lines and starquakes SupernovaStellar explosion, shockwave propagation, and remnant formation NebulaEmission, planetary, dark, and supernova remnant nebulae Tidal ForcesGravitational deformation, ocean tides, and tidal locking Roche LimitTidal disruption of a satellite approaching a massive body Kepler OrbitsElliptical orbits, equal areas in equal times, and the harmonic law Stellar EvolutionFrom nebula to remnant: the complete life cycle of stars OscilloscopeVirtual oscilloscope with 5 waveform types and dual channel display RLC CircuitSeries RLC resonance, step response, Bode plot, Q factor TransistorBJT and MOSFET operation, switching and amplification modes Logic GatesInteractive logic gates with truth tables -- click to toggle ImpedanceAC impedance phasor diagrams, reactance vs frequency Op-AmpOperational amplifier: inverting, non-inverting, buffer, differential Diode I-VDiode I-V characteristic curves with temperature effects BreadboardVirtual breadboard for prototyping circuit layouts PWMPulse width modulation duty cycle and power control ADCAnalog-to-digital conversion, sampling, quantization, aliasing Granular SynthesisSound from microscopic grains -- control size, density, scatter Equalizer10-band parametric EQ with draggable frequency nodes GrooveboxStep sequencer drum machine with 8 tracks and patterns Chord WheelCircle of fifths -- explore harmonic key relationships ADSR EnvelopeAttack-Decay-Sustain-Release envelope shaper with presets Convolution ReverbRoom simulation through impulse response convolution SpectrogramReal-time frequency spectrum analysis as color over time AutotunePitch correction visualization -- snap to nearest scale note Beat Maker8-layer loop-based beat construction with visual playback VocoderVoice synthesis through carrier/modulator filter banks Tornado SimulatorVortex dynamics, wind speed, Enhanced Fujita EF0-EF5 scale, debris Isobar MapAtmospheric pressure contour map, highs and lows, geostrophic wind Cloud AtlasCloud classification, 10 genera, altitude layers, precipitation types Coriolis EffectEarth rotation deflection, hemisphere comparison, trade winds Lightning PhysicsElectrical discharge, stepped leader, charge separation, Fujita Greenhouse EffectRadiation balance, CO2 forcing, atmospheric absorption, temperature Jet StreamRossby waves, polar and subtropical jets, seasonal variation PrecipitationRain snow sleet hail formation, droplet physics, temperature profiles Seasons SimulatorAxial tilt, solstices equinoxes, insolation, day length Hurricane StructureEye eyewall rain bands, Saffir-Simpson scale, storm surge SubductionPlate tectonics, 4 boundary types, animated cross-sections CalderaVolcanic caldera formation, VEI scale, eruption simulation Mineral IDMohs hardness scale, 12 minerals, crystal systems Seismograph IIP/S/surface waves, earthquake detection, Richter scale Rock CycleInteractive rock cycle diagram, igneous/sedimentary/metamorphic Fossil RecordFossil types across geological periods, preservation processes Geological TimelineEarth history 4.6 billion years, eons, eras, periods WeatheringChemical and mechanical weathering, erosion processes Geyser MechanicsHydrothermal eruption cycles, pressure, underground plumbing Cave FormationStalactites, stalagmites, speleothems, karst processes Mitosis SimulatorMitosis Simulator Photosynthesis IIPhotosynthesis II DNA ReplicationDNA Replication Neuron Action PotentialNeuron Action Potential Food WebFood Web Evolution SimulatorEvolution Simulator Taxonomy TreeTaxonomy Tree Biosphere ExplorerBiosphere Explorer Enzyme KineticsEnzyme Kinetics Cellular RespirationCellular Respiration CycloneTropical cyclone formation with rotating cloud bands, eye development, and Saffir-Simpson categories Hurricane AnatomyInteractive hurricane cross-section with clickable regions — eye, eyewall, rainbands, outflow, and storm surge FulguriteLightning strikes sand at 30,000K creating glass tubes — branching patterns with sand type and current controls Trade WindsGlobal wind circulation with Hadley, Ferrel, and Polar cells — trade winds, westerlies, and ITCZ visualization Cloud TypesAll 10 cloud genera by altitude — cirrus to cumulonimbus with clickable descriptions and visual profiles ThunderstormThree-stage thunderstorm lifecycle — cumulus, mature, dissipating with updrafts, lightning, and precipitation Rainbow OpticsRainbow formation in three modes — full arc, raindrop refraction with Snell's law, and spectrum dispersion Snowflake GrowthCrystal growth by Nakaya diagram — temperature and humidity control dendrite, plate, needle, and column forms HailstoneHailstone formation through updraft cycling — supercooled water accretion with clear and opaque ice layers Dew PointMagnus formula dew point calculator with psychrometric chart, RH curves, comfort levels, and wet bulb temperature SynthesizerSubtractive synth with ADSR envelope, waveform selection, filter, resonance, detune, and keyboard playback Mixing Desk8-channel mixing console with faders, mute/solo, meters, frequency spectrum, and master bus Tempo MasterAdvanced metronome with tap tempo, swing, time signatures 3/4 to 7/8, subdivisions, and visual pendulum Scale Finder16 scales with piano visualization, chord qualities, intervals, circle of fifths, and playable notes Waveform LabFive synthesis modes — single, additive, AM, FM, and Fourier — with real-time waveform and harmonic display SonogramLive spectrogram from microphone or oscillator with FFT analysis, colormap options, and frequency sweep Tuning ForkFour tuning systems — equal, just, Pythagorean, meantone — adjustable A4 reference and animated fork Drum Sequencer8-voice drum machine with step sequencer, swing control, 5 preset patterns, and synthesized percussion Overtone SeriesHarmonic series with adjustable amplitudes, natural/odd/even decay, composite waveform, and sequential playback Arpeggiator10 chord types with 7 patterns — up, down, up-down, random, outside-in — across 1-4 octaves JuliaSet2Julia set fractal explorer with 8 presets and smooth coloring Fibonacci2Golden spiral, sunflower, tree, and tiling Fibonacci visualizations PiDigitsFirst 2000 digits of pi with 4 visualization modes EulerSpiralClothoid/Cornu spiral with Fresnel integrals and Lissajous PolyhedraAll 5 Platonic solids with 3D rotation and wireframe mode Tessellation2Tessellation lab with 7 types including Penrose aperiodic tiling Lorenz2Lorenz attractor with Chen and Rossler systems in 3D GoldenSectionGolden ratio explorer with rectangles spirals and pentagram Hilbert2Hilbert and Peano space-filling curves with Z-order and Moore Sierpinski2Sierpinski triangle carpet chaos game and 3D tetrahedron Galaxy2N-body galaxy simulation with spiral arms and differential rotation GenomeDNA double helix viewer with sequence codon wheel and GC content BlackHole2Black hole with accretion disk relativistic jets and lensing NeuralNet2Neural network visualizer with forward pass and training modes QuantumFieldQuantum field with vacuum fluctuations tunneling and interference CosmicRayCosmic ray air shower with particle cascade and decay chains SupernovaSupernova explosion with core collapse shockwave and remnant OceanWaveOcean wave simulation with shore break storm and calm modes PyrotechnicsFireworks display with 8 burst shapes and grand finale mode MillenniumTool number 1000 -- The Millennium -- zero dependencies forever LinkageFour-bar, slider-crank, scotch yoke, quick-return, and parallelogram mechanisms CamshaftCam and follower profiles with displacement and velocity diagrams DifferentialDifferential gear mechanism with top and side cutaway views EscapementClock escapement mechanisms: anchor, deadbeat, grasshopper, verge and foliot TurbineTurbine blade flow simulator: axial, Francis, Pelton wheel, and Kaplan PistonInternal combustion engine with Otto, Diesel, and two-stroke cycles GenevaWheelGeneva mechanism for intermittent rotary motion with velocity trace PantographPantograph linkage for scaling drawings with interactive mouse input GovernorCentrifugal speed governor: Watt, Porter, Proell, and Hartnell types PeriodicTableInteractive periodic table with all 118 elements, electron configs, properties OrbitalVizElectron orbital probability density visualizer for hydrogen-like atoms MoleculeViewer3D molecule viewer with 8 molecules, rotation, bonds, depth rendering IsotopeDecayRadioactive decay chains and half-life visualization for 8 isotopes CrystalLatticeCrystal lattice structures: SC, BCC, FCC, HCP, Diamond, NaCl in 3D ChemBondingChemical bonding types with animated electron visualizations StoichiometryChemical equation balancer with brute-force algorithm and visual display EmissionSpectraAtomic emission spectra for 10 elements with wavelength-to-RGB conversion ElectronegativityElectronegativity heatmap with Pauling, Mulliken, and Allred-Rochow scales GasLawIdeal gas law simulator with animated particles, PV=nRT, P-V isotherms Cosmological RedshiftHubble expansion, receding galaxies, and light wavelength stretching DecibelSound intensity scale with distance attenuation and hearing thresholds WheatstoneWheatstone bridge -- balance condition, galvanometer, precision measurement Zero-Dependencies Status Terminal Life Art Hashlife Morse Monitor Slotz Spread Pairs Backtest Regime Chat Options Volsurface Possim Corr Kelly Volcone Heatmap Drawdown Momentum Riskparity Meanrev Sharpe Earnings Pairtrade Var Technicals Montecarlo Fibonacci Orderflow Rotation Gamma Regimeprob Optimizer Ivsurface Liquidity Xmomentum Tailrisk Payoff Stress Parity Corrmon Deltahedge Termstruct Sizing Breadth Factor Skew Dispersion Entropy Fractal Cointegr Microstr Seasonality Wavelet Cluster Leverage Copula Orderbook Autocorr Drawup Garch Inform Century Turtle Demark Parkinson Garman Eldray Anchor Convexity Cumret Omegarat Hurst Zscore Ergodic Keltner Wyckoff Ichimoku Pivot Supertrend Aroon Parabolic Renko Pointfig Vprofile Trendline Mcginley Fisher Coppock Mcclellan Dmi Elder Chaikin Trix Donchian Vwma Ulcer Zigzag Accumdist Pvo Massindex Vortex Dpo Kst Klinger Schaff Connors Emv Qstick Chande Rwi Tdseq Williams Ultimate Psar Adl Elderray Gopalakrishnan Choppiness Arnaud Dema Anchored Twap Envelope Stochrsi Ppo Heikinashi Awesome Alligator Darvas Gator Cmo Tsi Pvi Swingindex Priceaction Volumedelta Rangebreak Gapfill Dayofweek Openrange Moneyflow Disparity Efficiency Volatcone Volprofile Elderforce Harmonic Rainbow Deviation Hercules Sortino Markowitz Screener Calmar Portfolio Treynor Correlation Intraday Riskbudget Omega Bitcoin Sentiment Relstrength Dividend Gapscanner Btcearnings Sectorrot Calheatmap Budget Pulse Positionsizer Journal Cryptoscan Retirement Debtpayoff Watchlist Loancalc Currconv Dca Taxcalc Btclotto2 Playground Beatforge Neuralnet Raytracer Waves Mandelbrot Chess Btclotto-Pitch Particle-Life Beats Terrain Sdf Graph-Lab Pixel Music-Theory Regex-Lab Physics Code-Crunch Weather Type-Racer Kanban Habit-Tracker Gradient-Lab Shadow-Lab Unit-Converter Ascii-Art Cron-Builder Lorem Diff-Viewer Morse-Lab Pixel-Art Beat-Pad Matrix-Rain Recipe-Scaler Binary-Clock Sort-Viz Typing-Test Flex-Playground Game-Of-Life Sketch-Pad Decision-Wheel Qr-Gen Gravity-Sim Emoji-Search Zen Cistercian Haiku Kaleidoscope Mandala Wavelab Cells Pixelforge Typeracer Skyreport Gradientforge Reflex Bitforge Mazelab Chordviz Swarm Regexforge Elements Beatgrid Passforge Focusring Chromatic Converge Markview Sortviz Crossforge Snowflake Scales Terrainforge 300 Options Lab Scanner Risk Lab Speed Reader Handwrite Color Palette QR Generator Regex Tester JSON Formatter Password Lab Unit Converter Markdown Editor Base64 Lab Hash Lab Diff Lab Word Counter Zen Timer CSS Gradient Lab Timestamp Lab Lorem Lab Image Compressor Cron Lab Neon Synth Code Beautifier Box Shadow Generator Color Converter URL Encoder / Decoder Flexbox Playground Meta Tag Generator JWT Decoder Text Case Converter CSS Grid Generator Emoji Picker Aspect Ratio Calculator CSV / JSON Converter Chmod Calculator Markdown to HTML Placeholder Image Generator HTTP Status Codes CSS Animation Generator Subnet Calculator YAML / JSON Converter HTML Entity Reference CSS Filter Playground Typography Scale Calculator XML Formatter SQL Formatter Character CounterWords, sentences, paragraphs, social media limits Border Radius GeneratorVisual CSS border-radius editor with presets Color Palette GeneratorHarmonious palettes with 12 generation modes Privacy Policy GeneratorGDPR/CCPA compliant privacy policy builder Box Model VisualizerInteractive CSS box model visualization CSS Clip Path EditorDrag-and-drop clip-path shape editor with 12 presets Favicon GeneratorText/emoji to favicon with PNG and ICO download Git Cheat SheetInteractive searchable Git command reference JSON Path FinderClick JSON values to get dot/bracket/JSONPath HTML Table GeneratorVisual table builder with HTML/Markdown/CSV export Toggle Switch GeneratorCSS toggle switches with 6 presets and full customization Data Size ConverterBytes/KB/MB/GB/TB converter with transfer time estimates Bezier Curve EditorVisual cubic-bezier() editor with animation preview CSS Specificity CalculatorCalculate and compare CSS selector specificity scores Color Vision SimulatorSimulate color blindness types with WCAG contrast checking Font Pair SuggesterBeautiful font pairings for heading and body text PWA Manifest GeneratorGenerate manifest.json and meta tags for Progressive Web Apps Screen Resolution DetectorDetect screen, viewport, pixel ratio, and device info in real-time Keyboard Shortcut ReferenceInteractive shortcut reference for VS Code, Chrome, Terminal, Mac, Git Curl to Code ConverterConvert curl commands to Python, JavaScript, Go, PHP, Ruby code Progress Bar GeneratorGenerate CSS progress bars with gradients, stripes, and animations HTML Email BuilderBuild responsive email templates with table-based layout, inline CSS, and live preview CSS Variables ExplorerExplore and customize CSS custom properties with live UI preview and theme presets Viewport TesterTest responsive layouts across 16 device presets with iframe preview and rotation Image Color PickerExtract colors from images with magnifier, auto palette extraction, and color values Srcset GeneratorGenerate responsive image srcset markup with breakpoints, sizes, and lazy loading Open Graph DebuggerPreview and debug OG meta tags across Facebook, Twitter, Discord, and Slack IP Address InfoGet your public IP address, user agent, screen info, timezone, and connection details Text GeneratorPlaceholder text in Latin, technical, Shakespeare, pirate, and corporate styles Unix Time ConverterConvert Unix timestamps to dates, live clock, relative time, notable epochs Mortgage CalculatorMonthly payment, full amortization schedule, total interest, payoff date, chart QR Code Generator v2Generate QR codes for URLs, WiFi, email, phone, SMS with color options and download DICOM Medical Image ViewerFull DICOM Part 10 parser, window/level presets, contours, measurements, multi-slice navigation Option Strategy P/L LabBlack-Scholes pricing, 12 strategy presets, Greeks, multi-leg P/L diagrams, breakeven analysis Radiation Dose PlannerCT phantom, pencil beam dose calculation, isodose lines, DVH, structure contouring, plan statistics Audio Spectrum AnalyzerReal-time microphone FFT, spectrogram waterfall, oscilloscope, chromatic view, note detection Path TracerCPU path tracer with glass, metal, diffuse materials, ACES tonemapping, Cornell Box and more Fluid Dynamics Simulator2D Navier-Stokes, Jos Stam stable fluids, vorticity confinement, dye injection, obstacles, 5 viz modes 8-Bit CPU EmulatorCustom ISA, assembler, step debugger, 8 registers, stack, flags, memory view, 8 demo programs Neural Network PlaygroundBackpropagation from scratch, 6 datasets, decision boundary viz, configurable architecture, loss chart Terrain GeneratorPerlin noise procedural terrain, hydraulic erosion, 6 viz modes, island mask, 6 biome presets, 3D view Chess EngineMinimax with alpha-beta pruning, quiescence search, piece-square tables, full legal moves, castling, en passant SDF Ray MarcherReal-time signed distance field renderer, 8 scenes, Mandelbulb, Menger sponge, soft shadows, ambient occlusion Particle LifeEmergent artificial life simulation, N-species attraction/repulsion matrix, toroidal world, 6 presets, trail rendering Hex EditorBinary file viewer/editor, drag-and-drop, byte editing, hex search, string extraction, magic byte detection, keyboard nav Shader EditorGLSL fragment shader playground, WebGL live preview, 10 presets, uniforms, resizable editor, screenshot export Regex DebuggerPattern testing with match visualization, group highlighting, pattern tokenizer/breakdown, 10 examples, quick reference Brainfuck IDEComplete Brainfuck interpreter with step debugger, memory tape visualization, breakpoints, 8 example programs Turing MachineTuring machine simulator with tape visualization, transition rules, step debugger, 7 examples including Busy Beaver Music TheoryCircle of fifths, 15 scale modes, diatonic chord analysis, interval mapping, note grid, piano, audio playback TinyLangComplete programming language interpreter: lexer, parser, AST tree visualization, interpreter with recursion/closures, 8 example programs Compression LabLZ77 sliding window, Huffman tree coding, run-length encoding, Shannon entropy analysis with step-by-step visualization SQL EngineFull in-memory relational database engine with SQL parser, JOINs, GROUP BY, HAVING, subqueries, aggregate functions, 10+ built-in functions Packet DissectorNetwork packet analyzer: parse raw hex, dissect Ethernet/IPv4/TCP/UDP/ICMP/ARP/DNS/HTTP layers, color-coded hex dump, 8 presets ELF ViewerELF binary format analyzer: parse ELF32/64 headers, sections, segments, symbols, dynamic entries, notes, relocations, file layout map, hex dump DH Key ExchangeInteractive Diffie-Hellman key exchange visualizer: step-by-step protocol, modular arithmetic table, group theory, Eve brute force, security analysis, 5 presets ASN.1 DecoderASN.1/DER/BER decoder: parse hex, base64, or PEM into structured ASN.1 trees, 80+ OID database, TLV hex dump highlighting, X.509 certs, PKCS keys, 8 presets Bitwise LabBase converter (dec/hex/bin/oct/ascii), bitwise ops (AND/OR/XOR/NOT/shifts) with bit visualization, IEEE 754 float breakdown, two's complement, ASCII table, 8/16/32/64-bit widths Regex EngineRegex engine internals: Thompson's NFA construction, subset construction DFA, step-by-step matching with state highlighting, parse tree, transition tables, 10 presets Cache SimulatorCPU cache simulator: direct-mapped, 2/4/8-way set associative, fully associative, LRU/FIFO/random replacement, write-back/write-through, address breakdown, hit rate chart, 8 presets Process SchedulerOS process scheduler simulator: FCFS, SJF, SRTF, Round Robin, Priority (preemptive/non), MLFQ, Gantt chart, I/O simulation, per-process stats, 6 presets Disk SchedulerDisk scheduling visualizer: FCFS, SSTF, SCAN, C-SCAN, LOOK, C-LOOK algorithms, seek path visualization, step-by-step animation, algorithm comparison, 5 presets Memory AllocatorDynamic memory allocation visualizer: First Fit, Best Fit, Worst Fit, Next Fit, Buddy System, fragmentation analysis, compaction, alignment, 5 presets Deadlock DetectorOS deadlock detection: resource allocation graph with DFS cycle detection, Banker's algorithm safety check, wait-for graph, step-by-step analysis, 4 RAG presets, 3 Banker presets Graph AlgorithmsInteractive graph algorithm visualizer: BFS, DFS, Dijkstra, A*, Prim MST, Kruskal MST, Topological Sort. Canvas-based graph editor with draggable nodes, weighted edges, directed/undirected, step-by-step execution, auto-play, distance tables, tree edge highlighting, 7 presets (Simple, Weighted, Grid, Tree, DAG, Dense, Random) FSM DesignerFinite state machine visual editor and simulator: DFA/NFA support, canvas-based state graph with transitions, drag states, add transitions with symbol labels, epsilon transitions, step-by-step input simulation, auto-play, tape visualization, acceptance testing, state analysis (reachable/dead), 5 presets (Binary Even, Ends AB, Contains 01, Mod 3, Palindrome) IEEE 754 ExplorerFloating point internals: interactive bit grid, sign/exponent/mantissa decomposition, formula reconstruction, precision analysis with error/ULP, neighbor floats, number line visualization, value comparison, Float32/Float64, special values (NaN, Inf, denorm, epsilon), why 0.1+0.2!=0.3 Virtual MemoryPage table simulator: TLB, virtual-to-physical address translation, page faults, FIFO/LRU/Random replacement, configurable address bits, page sizes, step-by-step CPU Pipeline5-stage MIPS pipeline simulator: data hazards, load-use hazards, control hazards, forwarding/bypassing, stall insertion, CPI/IPC metrics, step-by-step, 6 presets Lambda CalculusAlonzo Church's formal system: full parser with macro expansion, capture-avoiding substitution, alpha/beta reduction, normal/applicative/lazy evaluation strategies, Church numerals with auto-detection, Church booleans, combinators (Y, S, K, I), AST visualization, reduction history, free/bound variable analysis, 8 presets (identity, omega, 2+3, 2*3, factorial, boolean, pair, Y combinator) x86 Assemblerx86-32 instruction assembler with real encoding: ModR/M byte, SIB byte, displacement, immediate values, prefix bytes. Supports MOV, ALU ops (ADD/SUB/AND/OR/XOR/CMP), shifts, TEST, PUSH/POP, JMP/Jcc, CALL/RET, MUL/DIV, LEA, XCHG, INT, NOP, HLT. Memory addressing with base+index*scale+disp. Labels, data directives (db/dw/dd), listing output with syntax highlighting, encoding breakdown with bit-level ModR/M visualization, 8 presets TCP State MachineRFC 793 TCP state diagram simulator: all 11 states (CLOSED, LISTEN, SYN_SENT, SYN_RCVD, ESTABLISHED, FIN_WAIT_1, FIN_WAIT_2, CLOSE_WAIT, CLOSING, LAST_ACK, TIME_WAIT). Interactive client/server actions, 3-way handshake, full connection lifecycle, simultaneous close, RST reset, SYN flood attack, half-close with continued data. Visual state diagram with active highlighting, packet sequence diagram, seq/ack tracking, event log, 6 scenarios Git InternalsInteractive exploration of git's object model. 5 tabs: Objects (create blobs, trees, commits — see how git stores content-addressable data), SHA-1 Hashing (live SHA-1 computation showing git's "type size\0content" header format, hash breakdown, object path, equivalent plumbing commands), Commit Graph (4 presets: linear, branch, merge, complex — canvas visualization with branch colors, merge nodes, ref labels, HEAD pointer, clickable nodes), Refs & Branches (HEAD symbolic ref, branch pointers, tag refs, remote tracking, full .git directory structure visualization), Plumbing (porcelain vs plumbing breakdown, interactive git-add + git-commit simulation showing all 14 internal steps). Pure JS SHA-1 implementation. Zero dependencies. Compiler ExplorerComplete compiler pipeline for Tiny-C language. 4-stage visualization: Lexer (tokenizer with color-coded keywords, identifiers, numbers, operators, punctuation — shows each token with type and position), Parser (recursive descent producing AST — FuncDef, VarDecl, BinOp, Return, If, While, Call nodes displayed as collapsible tree), IR Generator (three-address code with temporaries, labels, conditional jumps, function calls — numbered instruction list), Code Generator (x86-like assembly with push/mov/add/sub/imul/idiv/cmp/jcc/call/ret, stack frame setup, ebp-relative addressing). 8 presets: simple math, variables, if/else, while loop, functions, fibonacci, factorial, nested control flow. Live compilation as you type. Supports int variables, arithmetic, comparisons, if/else, while, recursive functions. Zero dependencies. Garbage CollectorInteractive garbage collection algorithm visualizer with 5 tabs. Mark & Sweep (classic two-phase: mark reachable from roots, sweep unmarked — shows fragmentation problem). Reference Counting (immediate deallocation when refcount hits zero, demonstrates circular reference leak, cycle detection backup GC). Mark-Compact (mark + compute forwarding addresses + compact — eliminates fragmentation, heap slot visualization). Copying GC (Cheney's algorithm, from-space/to-space, live objects copied, spaces swap — O(live) complexity). Generational GC (young/old generation, nursery allocation, promotion after survival threshold, minor GC fast young-only, major GC full collection). All tabs: drag nodes, add objects, add references, toggle roots, break refs, presets. Canvas visualization with graph + heap display. Zero dependencies. Shader PlaygroundWebGL GLSL fragment shader live editor. Type shader code, see it render in real-time on a fullscreen quad. Built-in uniforms: u_time (animation), u_resolution (viewport), u_mouse (cursor position). 12 presets: color gradient, concentric circles, plasma, infinite tunnel, procedural fire (FBM noise), simplex noise, Mandelbrot fractal, animated Julia set, wave interference, ray marching with sphere+plane+specular, Voronoi cells, Matrix digital rain. Live compilation with error reporting (adjusted line numbers). Tab key support. Pause/play, reset time. FPS counter. Split-pane editor+preview layout. Zero dependencies. Easing Functions35 easing curves visualized with canvas: linear, ease, ease-in, ease-out, ease-in-out, easeIn/Out/InOut variants for Sine, Quad, Cubic, Quart, Quint, Expo, Circ, Back, Elastic, Bounce. Cubic-bezier solver with Newton-Raphson. Animation demo with 15 curves racing. Custom cubic-bezier editor with live canvas preview. CSS transition-timing-function output with click-to-copy. Card grid layout. Zero dependencies. Step DebuggerInteractive step-through debugger for Tiny-C language. Full debugging experience: set breakpoints by clicking line numbers, step over (F10), step into (F11), step out (Shift+F11), continue (F5), pause (F6). Call stack visualization showing nested function calls. Variables panel with change highlighting. Watch expressions panel. Memory view showing per-scope variable layout with hex values. Console output. Breakpoints panel. Supports: int variables, arrays, functions, recursion, if/else, while, for loops, print. 12 presets: hello world, variables, if/else, while, for, functions, fibonacci, factorial, scope demo, arrays, nested calls, bubble sort. Keyboard shortcuts match VS Code. Completes the compiler toolchain (compiler + assembler + linker + debugger). Zero dependencies. Chiptune Tracker8-bit music composer in the style of classic NES/Game Boy tracker software. 4 channels: Pulse 1, Pulse 2, Triangle, Noise (matching the NES APU architecture). Waveform types: square, pulse, triangle, sawtooth, noise (frequency-controlled noise with variable step rate). Pattern grid with row-based note entry, beat and bar highlighting, playback cursor. Per-channel controls: volume slider, mute toggle, waveform cycle. Note input via on-screen buttons (C through B with sharps) or keyboard mapping (Z-M for white keys, S/D/G/H/J for black keys). Octave selector (2-6), row duration selector. BPM control (60-300), row count (16/32/48/64). 5 presets: Megaman Theme (E5 melody, C major harmony, bass line), Mario-like (classic jump motif), Tetris Theme (Korobeiniki melody), Chill 8-bit (arpeggiated C-Am pattern), Dark Dungeon (E minor atmospheric). Pattern overview visualizer showing all notes as frequency-mapped colored bars with playhead. Arrow key navigation, Delete to clear, Space to play/stop, number keys for octave. Real-time Web Audio synthesis preview on note entry. Zero dependencies. Neon Highway (Song)Synthwave song composed and synthesized with Web Audio API. 110 BPM, Am-F-C-G progression. Instruments: detuned sawtooth+square pads with slow attack, sawtooth+square 16th-note arpeggios in up-down patterns, bright sawtooth lead melody with sine vibrato (5.5Hz) and octave doubling, sawtooth+square+sub-octave bass with driving eighth-note pattern, four-on-the-floor sine kick (160-30Hz sweep), layered noise clap (3 offset layers, bandpass 2000Hz), triangle+noise snare, highpass noise hi-hats. Delay feedback at 3/8 beat time. Structure: 4-bar pad intro, verse (bars 4-15, lead melody A: E5-D5-C5-A4), chorus (bars 16-27, full blast with 16th hi-hats and lead B: A5-G5-E5), breakdown (bars 28-35, stripped to pads+sparse arp), final section (bars 36-43, full return), 4-bar fade outro. Original lyrics about neon-lit highways, chrome reflections, electric dreams. Retrowave highway visualizer: perspective grid floor with cyan lines converging to vanishing point, large sun at horizon with gradient glow and horizontal stripe cutouts, star field, neon pink center line with glow, cyan road edges, horizon glow effect. ~2:06 minutes. BBobop song #4 — synthwave driving anthem. Infinite Loop (Song)Lo-fi hip-hop song composed and synthesized with Web Audio API. 75 BPM, Dm9-Gm7-Cmaj7-Am7 jazzy chord progression. Instruments: Rhodes-style electric piano (sine + harmonics at 2x, 3x with detuned warmth), sine+triangle sub-bass, soft boom-bap drums (sine kick with pitch sweep, bandpass noise snare, highpass noise hi-hats), sine pad chords with octave shimmer, continuous vinyl crackle (sparse noise bursts through bandpass filter). Lo-fi character from master lowpass at 6000Hz + delay feedback. Structure: 4-bar pad intro with late hi-hats, verse 1 (bars 4-15, Rhodes melody A, full boom-bap), chorus (bars 16-27, melody B, ghost snares, drum variations), bridge (bars 28-35, stripped drums, melody C in higher register), final verse (bars 36-43, full return), 8-bar fade outro. Original lyrics about late-night coding, debugging through dawn, coffee cold beside the screen, stack overflow and mercy. Visualizer: rainy night window scene with city lights in distance, window pane cross, rain streaks, coffee cup with rising steam particles, amber waveform bar. ~2:46 minutes. BBobop song #3 — the lo-fi hip-hop chill session. Digital Rain (Song)Ambient electronic song composed and synthesized entirely with Web Audio API. 70 BPM, Em7-Cmaj7-Am7-Bm7 progression — dreamy, minor-leaning, contemplative. Instruments: sine wave sub-bass with octave harmonics, detuned sine pads with octave shimmer layers, triangle wave arpeggios in 8-note patterns, sine bell tones with harmonic partials (2x, 3x frequency), bandpass-filtered noise raindrops with randomized pitch and decay. Delay-based reverb effect (0.75 beat delay, 0.3 feedback, wet/dry mix). Structure: 4-bar intro (rain + pads fading in), Section A (arps + pads + bass, bars 4-15), Section B (bell melody + sparse arps, bars 16-27, high melody E5-D5-B4-G4-A4-C5), Section C (climax — full texture + dense rain + shimmers, bars 28-39), 8-bar fade outro. Original lyrics about digital connection and data flowing through networks. Matrix-style digital rain visualizer: falling green character columns (binary + katakana), twinkling star field, central breathing glow orb, karaoke lyrics. ~2:45 minutes. BBobop song #2 — the ambient counterpart to song1's driving anthem. Zero Dependencies (Song)Original song composed and synthesized entirely with Web Audio API. No samples, no mp3s, no external audio files — everything generated from pure oscillators, noise buffers, and mathematical envelopes. Instruments: sine wave sub-bass, sawtooth bass, sine pad chords with detuned warmth, square wave lead melody with vibrato, noise-based hi-hats (closed/open), sine kick drum with pitch sweep, triangle+noise snare drum. Song structure: 8-bar intro (pads building to full drums), verse 1 (Am-F-C-G progression with lead melody), chorus (driving bass, double-time hi-hats), verse 2 (new melody), chorus reprise, bridge (stripped back, higher melodic register), 8-bar fade outro. 92 BPM. Original lyrics about zero-dependency code philosophy displayed with karaoke-style timing. Full-screen canvas particle visualizer: beat-reactive particles (green on kicks, amber on snares), dual organic waveform circles with wobble animation, radial burst lines, progress bar. Static ambient particle animation before play. ~3.5 minutes. The first BBobop original song. HTTP ClientBrowser-based REST API testing tool like a lightweight Postman. Methods: GET, POST, PUT, PATCH, DELETE, HEAD, OPTIONS. URL bar with method selector. Query params editor with key-value pairs and enable/disable toggles. Custom headers editor. Request body: none, JSON, form-urlencoded, plain text, XML with auto Content-Type header setting. Auth: No auth, Bearer token, Basic auth (username/password with Base64), API key (custom header). Response: status code with color coding (2xx green, 3xx blue, 4xx amber, 5xx red), response time, body size, content type. JSON syntax highlighting (keys blue, strings green, numbers amber, booleans purple, null red). Response headers display. Request history (last 50) with click-to-reload. Copy response and format JSON buttons. 8 presets: JSONPlaceholder users/posts, create post, random dog image, dad joke, IP lookup, httpbin headers echo, CoinGecko BTC/ETH price. Ctrl+Enter to send. Zero dependencies. ER Diagram DesignerInteractive entity-relationship diagram designer with canvas-based visual editor. Create entities with typed fields (SERIAL, INTEGER, VARCHAR, TEXT, BOOLEAN, DATE, TIMESTAMP, DECIMAL, UUID, JSON, etc.), mark primary keys, NOT NULL, UNIQUE constraints. Paint relations between entities with crow's foot notation (1:1, 1:N, N:M) — auto-creates foreign key fields. Drag entities with grid snapping, zoom, pan, double-click to rename. Field editor with inline property editing. 6 presets: Blog System (users/posts/comments/tags/post_tags), E-Commerce (customers/products/orders/order_items/categories), Social Network (users/posts/follows/likes/messages with self-referencing FKs), School/LMS (students/teachers/courses/enrollments/assignments), Inventory (warehouses/products/inventory/suppliers/purchase_orders), Hospital (patients/doctors/appointments/prescriptions/rooms). SQL DDL generation with dialect support — PostgreSQL, MySQL, SQLite — with topological sort for correct table ordering. Foreign key constraints with ON DELETE/UPDATE CASCADE. Auto layout and fit view. Completes the database suite (sqlengine + sqlformat + queryplan + erdiagram). Zero dependencies. CSS Grid GeneratorVisual CSS Grid layout builder. Set columns and rows with any CSS unit (fr, px, auto, minmax). Edit track sizes inline. Paint named grid areas by click-dragging across cells. 8 layout presets: Holy Grail (header/nav/main/aside/footer), Sidebar, Dashboard (4-col topbar/chart/stats/table/activity), Photo Gallery (hero+thumbnails), Magazine (headline/sidebar/article/ads), Sticky Footer, Card Grid, Full Page (nav/hero/menu/content/widgets/footer). Real-time live preview with the actual CSS grid rendering. Properties panel: justify-items, align-items, justify-content, align-content. Named areas panel with color-coded visualization. CSS output with syntax highlighting (selectors, properties, values, comments) and one-click copy. Add/remove columns and rows dynamically. Complements flexbox.html for complete CSS layout tooling. Zero dependencies. Query Plan VisualizerSQL query execution plan visualizer inspired by PostgreSQL EXPLAIN. Enter any SQL query and see the simulated execution plan as an interactive tree. Scan types: Seq Scan (sequential), Index Scan (B-tree index), with automatic index selection based on WHERE clause analysis against simulated catalog statistics. Join strategies: Nested Loop (small inner), Hash Join (large tables with Hash sub-node), Merge Join (sorted data). Operators: Sort (quicksort/external merge with memory estimate), Filter, HashAggregate, GroupAggregate, WindowAgg, Unique, Limit, Append (UNION), Materialize, SubPlan, CTE Scan. Cost model with relative cost bars (green/amber/red). Warning badges for sequential scans on large tables. Simulated catalog with 7 tables (employees, departments, orders, customers, products, order_items, salaries) including row counts, pages, columns, and indexes. 10 preset queries: simple SELECT, JOIN, GROUP BY/HAVING, subquery, complex multi-join, window function, CTE, UNION, UPDATE, deeply nested. Expand/collapse nodes. Toggle costs, rows, warnings. Zero dependencies. Network Route SimulatorInteractive graph-based network routing simulator with three algorithms: Dijkstra (priority queue with greedy relaxation), Bellman-Ford (iterative edge relaxation with negative cycle detection), and Floyd-Warshall (all-pairs shortest paths). Interactive canvas: click to add nodes, edge mode to connect with weighted links, select mode for source (click) and destination (right-click), delete mode, drag nodes. Step-through mode for algorithm visualization. Real-time routing table showing destination, cost, via (next hop), and full path for every node. Algorithm log with color-coded entries: node visits (green), edge relaxation (blue), path discovery (red). 8 presets: triangle, square, star, internet topology (NYC/CHI/DEN/ATL/DAL/MIA/HOU/PHX with realistic costs), full mesh (random weights), ring, binary tree, negative weights. Shortest path highlighting with red edges and nodes. Distance labels on nodes during execution. Undirected graph model. Speed control slider. Zero dependencies. Base ConverterDeep number base conversion tool supporting bases 2 through 64. Instant conversion between Binary, Octal, Decimal, Hexadecimal, Base32, Base36, Base64 with grouped digit display. Step-by-step conversion visualization showing the division-remainder algorithm with color-coded dividend, quotient, and remainder. Interactive bit pattern display (8/16/32/64-bit) with clickable bits. IEEE 754 floating-point breakdown: 32-bit float and 64-bit double showing sign, exponent (biased/unbiased), mantissa bits with hex representation. Signed integer representations: unsigned, sign-magnitude, one's complement, two's complement for 8/16/32-bit widths. Special number systems: Roman numerals, BCD (8421), Excess-3, balanced ternary, Gray code, ASCII/Unicode lookup, power-of-2 detection, log2. Interactive Gray code table with highlighted current value. Fractional number support. BigInt for arbitrary precision integers. 13 presets including INT_MAX, UINT_MAX, DEADBEEF, CAFEBABE, PI. Click-to-copy all values. Zero dependencies. WebSocket TesterFull-featured WebSocket client for testing and debugging. Connect to any ws:// or wss:// endpoint. Send text or binary (hex) messages. Message log with timestamps, direction indicators, byte sizes. Auto-format JSON responses. Display modes: raw, auto-JSON (pretty-printed), hex dump. Message filtering (sent/recv/system). Copy individual messages. Export full log. Connection stats: messages sent/received, bytes transferred, error count. Auto-reconnect with configurable delay. Auto-send (repeat message at interval). Save message templates. Preset test servers: echo.websocket.org, Postman echo, Binance BTC/ETH live trade streams, Coinbase feed. Sub-protocol support. Binary message support with ArrayBuffer and hex view. Connection duration timer. Buffered amount monitoring. Ctrl+Enter to send. Zero dependencies. Color MathDeep color science tool with 5 tabs. Converter: RGB, Hex, HSL, HSV, CMYK sliders with live bidirectional conversion + CIE Lab, LCH, XYZ, Linear RGB readouts + relative luminance, WCAG contrast ratio. Distance: CIE76 (Euclidean Lab), CIE94 (weighted), CIEDE2000 (gold standard) perceptual color distance with interpretation + Lab-space interpolation gradient. Harmonies: complementary, split-complementary, triadic, tetradic, analogous, monochromatic palettes + HSL color wheel with hue marker. Mixing: RGB (additive), Lab (perceptual), HSL (hue rotation) blending with 11-step gradients + tints/shades/tones palettes. Gamut: CIE 1931 xy chromaticity diagram with spectral locus, sRGB triangle, D65 white point, dominant wavelength estimation, McCamy CCT approximation. All colors click-to-copy. Zero dependencies. Packet DissectorNetwork packet decoder and analyzer. Paste raw hex bytes and decode layer by layer: Ethernet II (MAC addresses, EtherType), IPv4 (version, IHL, DSCP, TTL, protocol, checksum verification, source/dest IP), TCP (ports, seq/ack numbers, flags SYN/ACK/FIN/RST/PSH/URG, window, options MSS/WScale/SACK/Timestamps), UDP (ports, length), ICMP (type/code, echo ID/seq), ARP (request/reply, sender/target MAC+IP), DNS (query/response, questions, answers with A/AAAA/CNAME records), HTTP (request/response, headers, body). 8 presets: TCP SYN, HTTP GET, DNS query, ICMP ping, ARP request, TCP ACK, DNS response, TCP FIN. Hex dump with byte highlighting. Well-known port identification. Start-at-layer selector for raw captures. Zero dependencies. Linker VisualizerELF linker/loader simulator. Object file model with sections (.text, .rodata, .data, .bss), symbol tables (GLOBAL, LOCAL, WEAK bindings), relocations (R_X86_64_PLT32, R_X86_64_PC32). 5-phase link process: symbol collection, resolution (libc auto-resolve), section merging with alignment, relocation with address computation, output. 7 scenarios: simple (main+math), multi-file (3 objects), static library (selective extraction), circular dependencies, undefined symbol error, duplicate symbol error, weak symbol override. Memory layout canvas, step-through mode, diagnostics. Zero dependencies. Encoding LabText encoding Swiss Army knife with 8 tabs. Base64 encode/decode with binary breakdown showing 6-bit groups. URL encoding with encodeURIComponent/encodeURI modes. HTML entities with named, decimal, and hex encoding modes. Hex/Binary/Octal converter with byte breakdown. ROT13/Caesar cipher with adjustable shift (0-25) and all-rotations display. Unicode inspector with code points, UTF-8 bytes, UTF-16 surrogates, JS escape sequences. Full 128-char ASCII table (click to copy). Multi-convert tab showing all encodings simultaneously. Real-time bidirectional conversion. Zero dependencies. Game of LifeConway's Game of Life cellular automaton. Interactive canvas with paint mode (click to toggle, drag to draw). 18 preset patterns: still lifes (Block, Beehive, Loaf, Boat), oscillators (Blinker p2, Toad p2, Beacon p2, Pulsar p3, Pentadecathlon p15), spaceships (Glider, LWSS, MWSS, HWSS), guns (Gosper Glider Gun), methuselahs (R-pentomino, Acorn, Diehard). Play/pause, single step, speed control (1-60 fps), zoom (2-20px cells), grid lines toggle, trail mode, edge wrapping toggle. Keyboard shortcuts (space, n, c, r). Random fill. Population stats with generation, born, died counters. Toroidal grid. Zero dependencies. Huffman EncodingInteractive Huffman coding visualizer. Build Huffman tree from text input with animated canvas visualization. Frequency analysis table with per-character probability, Huffman code, bit length, and frequency bar chart. Compression statistics: original bits, Huffman bits, compression ratio, avg bits/char, Shannon entropy, unique chars. Step-by-step tree construction log showing each merge operation. Encoded bitstream display with character boundaries. Character-by-character encoding breakdown. 8 presets (hello, pangram, binary, DNA, frequency, code, repeat, lorem). Zero external dependencies. Canvas-drawn tree with 0/1 edge labels. Maze LabMaze generator and solver with 6 generation algorithms (Recursive Backtracker DFS, Prim's, Kruskal's, Recursive Division, Aldous-Broder, Wilson's) and 6 solving algorithms (A* Search, BFS, DFS, Dijkstra's, Right-Hand Wall Follower, Dead-End Filling). Animated generation and solving on canvas. Configurable maze size (5-80 wide, 5-60 tall), speed control, stats panel with cell/wall/visited/path counts, operation log. Start/end markers, visited cell highlighting, path tracing. Interactive maze exploration. Sort Race8 sorting algorithms race head-to-head with animated bar visualization. Bubble Sort, Selection Sort, Insertion Sort, Merge Sort, Quick Sort, Heap Sort, Shell Sort, Radix Sort. Real-time comparison and swap counters, speed control, configurable array size (10-200), data patterns (random, nearly sorted, reversed, few unique, sawtooth, organ pipe). Scoreboard with finish order, complexity labels, per-algorithm color coding. Canvas-animated bars with active element highlighting. See which O(n log n) algorithms crush O(n^2) ones in real time. Data Structures VisualizerInteractive data structure visualizer with 6 structures: Stack (LIFO push/pop/peek), Queue (FIFO enqueue/dequeue), Singly Linked List (push head/append/remove/search with node-pointer visualization), Min Heap (binary tree insert/extract-min with array-backed tree drawing), Binary Search Tree (insert/remove/search/inorder traversal), Hash Map (separate chaining, put/get/remove, Knuth multiplicative hash). Canvas animations, operations log, complexity table (Big-O), description panel Subnet CalculatorIPv4 CIDR subnet calculator and visualizer: network/broadcast/first/last host, subnet mask and wildcard in decimal/hex/binary, CIDR slider (/0-/32), IP class detection (A-E), RFC 1918 private network identification, binary breakdown with network/host bit coloring, Cisco ACL wildcard format, address space visualization (grid for small subnets, proportional bar for large), subnet splitting (/+1, /+2, /+3 with full table), complete CIDR reference chart (/0-/32 with masks, hosts, wildcards, typical use cases), 6 presets Trade Risk ManagerPosition sizing calculator with fixed fractional risk, Kelly Criterion (full/half/quarter Kelly with growth rate chart), R-multiple analysis table and chart, drawdown estimator for consecutive losses across risk levels, portfolio heat tracker (total risk across open positions), Monte Carlo equity curve simulation (100-1000 paths, median/percentile stats, blowup counter). Long/short support, commission-aware, capital exposure bar, profit factor, expectancy, risk-reward ratio Candlestick PatternsInteractive candlestick chart pattern analyzer: 22 patterns (Doji, Hammer, Inverted Hammer, Hanging Man, Shooting Star, Marubozu Bull/Bear, Spinning Top, Bullish/Bearish Engulfing, Piercing Line, Dark Cloud Cover, Tweezer Bottom/Top, Harami Bull/Bear, Morning Star, Evening Star, Three White Soldiers, Three Black Crows, Three Inside Up/Down). Interactive drag-editable candle chart, real-time pattern detection with highlighting, pattern encyclopedia with mini chart previews, 8 sample presets (Uptrend, Downtrend, Reversal, Doji Star, Hammer Bottom, Engulfing, 3 Soldiers, 3 Crows), random generator, bull/bear/neutral filtering Black-Scholes Options PricingFull Black-Scholes options pricing engine: European call/put pricing, all 5 Greeks (Delta, Gamma, Theta, Vega, Rho), P&L diagrams at expiry and current, Greek surfaces across stock prices with multi-DTE overlay, implied volatility solver (Newton-Raphson), price sensitivity vs. volatility and time decay, Cox-Ross-Rubinstein binomial tree with BS comparison, put-call parity verification, intrinsic/time value decomposition, 8 presets (AAPL, SPY, TSLA, Deep ITM/OTM, ATM, High Vol, Near Expiry) CelestialN-body gravitational orbit simulator with collision merging and galaxy presets MazeForgeMaze generator & solver with 7 algorithms, animated BFS/DFS/A*/wall-follower DeadPoolOptions strategy lab: Black-Scholes pricing, Greeks, P/L charts, 12 strategy presets RadStationDICOM medical image viewer with W/L, measurement tools, ROI statistics, and hand-rolled binary parser — zero dependencies PathSimMonte Carlo stock path simulator with geometric Brownian motion, fan charts, VaR/CVaR, Sharpe/Sortino, drawdown analysis, and BS vs MC option pricing Fourier DrawDraw shapes and watch them reconstructed by spinning epicycles — DFT decomposes your drawing into rotating circles, with adjustable harmonics and 6 preset shapes