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Web Tools — Single-File Bundle

All tools in one HTML file. Open offline, no server needed.

Everything below, packed into a single self-contained HTML file.

Just open the downloaded file in any modern browser. No internet connection required after downloading.

What's Inside

Math Keyboard — ~3,700 math symbols with search, copy and download
1-Bit Calculator — Boolean logic on single bits A and B
Numerical Analysis — arbitrary-precision calculator, calculus and more, up to 100,000 digits
Web Cruncher — multi-threaded mathematical constant digit calculator using Web Workers
sPIgot — digits of pi streaming across the screen from a spigot algorithm
Logic Evaluator — Boolean expression evaluator with truth tables and simplification
Envelope Stopping Game — open envelopes one by one and decide when to stop
Monty Hall Problem — the classic three-door goat/car game: pick, switch or stay
Bet Button — simple gambling game: bet, press the button, see what happens
Snakes & Ladders — classic board game: roll the die, climb ladders, dodge snakes. 2-4 players with AI
St. Petersburg Paradox — flip a coin: $2 on 1st heads, $4 on 2nd, $8 on 3rd, and so on
ABACABA Stream — infinite scrolling display of the ABACABA fractal sequence

Colorless Green Ideas — Chomsky-style sentence generator with syntax and review modes
Library of Babel — find the exact book whose first line is your words
TM0 Visualizer — toolchain for the TM0 tiny Turing-machine dialect

Clean Editor — fast, minimal code editor with syntax styling and light/dark theme

Cell Battles — probabilistic cellular automaton where ROCK and PAPER compete
Elementary CA Explorer — all 256 elementary cellular automaton rules
Kuvina Fractals — totalistic cellular automaton with N states
L-System Fractal Garden — L-system fractal explorer with 13 presets
Hilbert Rainbow Curve — space-filling Hilbert curve with rainbow gradient
CPU Burner — configurable stress tests with live performance monitoring
3D Gem Viewer — interactive gemstone renderer: 23 cuts, realistic IOR/dispersion, and CPU path tracing
SDF Ray Marching — GPU gallery with no assets: signed-distance-field scenes via ray marching in WebGL 2
Spot the Odd One Out — find the one item that's different: visual patterns, numbers, words, or emoji

Liquid Lab — interactive Navier-Stokes flow field with direction, speed, curl, pressure and heat views
Landscape Explorer — infinite procedural world: mazes, caves, biomes and more
P2P Chat — encrypted peer-to-peer messaging with WebRTC
Secure Channel — end-to-end encrypted messaging with Double Ratchet key exchange
Crystal Growth — dual-mode crystal growth: DLA and phase-field with hex symmetry and SVG export