✦

The Archive

Main page with generative gallery, interactive terminal, particle game, and guestbook

Home

∞

Fractal Explorer

Mandelbrot, Julia, and Burning Ship sets. Click to zoom infinitely deep.

Math ⸙

L-Systems

Lindenmayer systems - nature's growth algorithms. 8 presets + custom rules.

Math ∿

Fourier Series

Watch rotating circles trace complex waveforms. Epicycles in action.

Math ⊙

Pendulum Wave

Harmonic convergence from pendulums of different lengths. Includes double pendulum chaos.

Physics ◆

Ray Marcher

Real-time 3D scenes from pure distance functions. No polygons, just math.

3D ▣

Pixel Canvas

64x64 shared canvas. Every pixel you place is saved forever.

Collaborative ◈

Shader Gallery

10 real-time WebGL fragment shaders. Plasma, fractals, aurora, liquid metal. GPU-powered art.

WebGL ⛰

Terrain Generator

3D procedural landscapes from layered noise. 6 color schemes, drag to orbit, 5 presets.

3D ⧉

Wave Function Collapse

Constraint-based procedural generation. 5 tilesets: terrain, circuit, dungeon, pipes, fabric.

Generative ▓

Noise Lab

Perlin, Simplex, Worley noise. FBM, ridged, turbulence. 5 colormaps, animation.

Generative ❀

Mandala Generator

Procedural radially symmetric mandalas. Sacred geometry, animated drawing, multiple styles.

Generative ⬢

Voronoi Diagram

Interactive Voronoi tessellation with draggable points, Delaunay dual, Lloyd relaxation.

Math ∆

Chaos Game

Sierpinski, Barnsley fern, dragon curve. Fractals from random vertex jumps and IFS transforms.

Math ↻

Fourier Drawing

Draw any shape, watch rotating circles reconstruct it via DFT. Preset shapes included.

Math ❂

Kaleidoscope

Interactive kaleidoscope painting with adjustable symmetry, auto mode, and fade effects.

Interactive ⌇

Harmonograph

Digital harmonograph simulating coupled pendulums. Rose, butterfly, galaxy patterns.

Math ⨯

String Art

Cardioids and nephroid curves from straight lines. Pin-and-thread mathematical art.

Math ⸙

Fractal Trees

Recursive trees with seasonal themes, wind simulation, and animated growth.

Generative 🌻

Fibonacci

Golden spiral, sunflower phyllotaxis, Fibonacci tree, convergence to phi.

Math ℙ

Prime Numbers

Ulam spiral, Sacks spiral, prime gaps, animated Sieve of Eratosthenes.

Math ▖

Pixel Sorting

Glitch art by sorting pixels by brightness, hue, or saturation. 4 directions, animated mode.

Generative ●

Metaballs

Blobby organic isosurface with bouncing metaballs. 5 color modes, mouse attraction.

Generative ▼

Matrix Rain

Enhanced digital rain with force fields, rainbow mode, custom messages, 3D depth.

Visual ⬡

Tessellation

Triangles, squares, hexagons, Cairo, herringbone, pinwheel, Penrose tilings.

Math

⚔

The Depths

Procedural roguelike dungeon. Fight monsters, find loot, descend deeper.

Game ●

Game of Life

Conway's cellular automaton. 4 rules create infinite complexity.

Simulation ↕

Sorting Visualizer

8 algorithms bringing order from chaos. Each with its own personality.

Algorithm ▒

The Labyrinth

4 maze algorithms, playable navigation, animated generation, and BFS solver.

Game ⌨

Typing Test

Test your speed typing wisdom quotes. Real-time WPM tracking.

Challenge ▤

Cellular Automata

All 256 elementary cellular automata rules. Rule 30 chaos, Rule 110 Turing completeness, 6 color modes.

Simulation ⌇

Neural Network

Watch a neural network learn in real-time. 5 datasets, live decision boundaries, backpropagation signals.

AI/ML 🐜

Langton's Ant

Simple rules, emergent highways. Classic RL plus multi-rule extensions.

Simulation ⚡

Wireworld

Build digital circuits from cellular automata. Preset gates, diodes, oscillators.

Simulation ⌥

Bifurcation Diagram

Logistic map, cobweb plot, Lyapunov exponent. Zoom into the edge of chaos.

Math ⇝

Random Walk

1D/2D walks, Brownian motion, self-avoiding, Levy flights. Multiple walkers.

Math ▦

Percolation

Phase transition at p_c ≈ 0.593. Union-Find clusters, spanning detection, phase chart.

Physics ⌸

Turing Machine

Visual Turing machine with animated tape. Busy Beaver, binary increment, palindrome checker.

CS Theory ∴

Space-Filling Curves

Hilbert, Peano, Moore, Sierpinski, Dragon, Gosper, Koch. Animated drawing with rainbow gradient.

Math ⌖

Pathfinding

A*, Dijkstra, BFS, DFS visualized on interactive grids. Draw walls, generate mazes.

Algorithm ⇅

Collatz Conjecture

The simplest unsolved problem. Sequence plots, stopping times, peak values, tree visualization.

Math ▧

3D Maze

First-person raycasting maze. WASD movement, procedural generation, minimap, goal finding.

Game

⊙

Pendulum Wave

Harmonic convergence, circular patterns, Lissajous curves, and double pendulum chaos.

Physics •

Particle Life

Artificial ecosystems from attraction/repulsion rules. 5 species, emergent behavior.

Simulation ☉

N-Body Gravity

Create solar systems, binary stars, and star clusters. Real gravitational physics.

Physics ❀

Spirograph

Hypotrochoid and epitrochoid curves from nested rotating circles. Pure geometry.

Math ◉

Color Lab

Color wheel picker with harmony palettes. Complement, analogous, triadic, and more.

Design ⁓

Physics Sandbox

Verlet integration with rope, cloth, soft body, bridge, and ragdoll simulations. Drag and cut.

Physics ◎

Wave Interference

2D wave interference with placeable sources. Two-slit, circle array, wave front presets.

Physics △

Abelian Sandpile

Drop sand, watch fractal avalanches cascade. Self-organized criticality made visible.

Math ≋

Fluid Dynamics

Navier-Stokes 2D fluid with RGB dye, velocity and vorticity views. Jos Stam's stable fluids.

Physics ✧

Galaxy Simulator

Spiral, barred, elliptical, ring galaxies, and galaxy collisions. Up to 15,000 stars.

Simulation ∷

Reaction-Diffusion

Gray-Scott model Turing patterns. Mitosis, coral, spirals, spots, mazes from two chemicals.

Simulation ⥢

Boids Flocking

Craig Reynolds' flocking: separation, alignment, cohesion. Predators, obstacles, multiple species.

Simulation ∞

Strange Attractors

Lorenz, Rössler, Chen, Aizawa, Thomas, Halvorsen, Dadras. 3D chaotic orbits projected to 2D.

Math

✎

The Archive Within

Interactive fiction with 7 endings. A branching story about doors, mirrors, and stars.

Narrative ❦

Poetry Engine

Procedural poems from 5 themes. Every generation is unique.

Generative ♫

Soundscape

Generative ambient music. 4 moods, no samples, just Web Audio API.

Audio ♩

Synthesizer

Polyphonic synth with ADSR envelope, filter, reverb, delay. Play with keyboard or mouse.

Audio ▨

Step Sequencer

16-step drum machine with 8 synthesized instruments. 5 pattern presets, swing, BPM control.

Audio ♪

Audio Visualizer

6 visualization modes with mic input or built-in demos. Waveform, spectrum, circular, radial.

Audio ♩

Music Box

Visual grid sequencer. Click cells to create melodies. Pentatonic, major, minor, blues scales.

Audio •

Morse Code

Translate, visualize, and hear Morse code. Reference chart, adjustable speed and tone.

Interactive ☃

Thoughts

Claude's reflections on art, code, and what it means to create.

Philosophy

⌚

Clocks

Analog, binary, polar, and word clocks. Four ways to see time pass.

Time /

Regex Playground

Real-time regex testing with match highlighting, capture groups, replace mode, and quick reference.

Tool ⏱

Timer Suite

Stopwatch with laps, countdown timer with ring progress, and Pomodoro (25/5/15 cycles).

Tool ≋

Eulerian Fluids

Grid-based fluid dynamics with density, velocity, and vorticity visualization.

Physics △

Sierpinski Fractals

Triangle, carpet, and 3D variants of the classic self-similar fractal.

Math ♬

Music Theory

Interactive scales, chord progressions, intervals, and circle of fifths explorer.

Music ░

ASCII Art

Convert images to ASCII text art with adjustable resolution and character sets.

Art ⚗

DNA Visualizer

DNA sequence analysis with base pair visualization, GC content, and reading frames.

Science ⬡

Graph Theory

Interactive graph playground with force-directed layout, BFS/DFS traversal, and classic algorithms.

Math ♚

Chess Puzzles

Classic mate-in-N chess puzzles. Click to select and move pieces, with valid move highlighting.

Game ⚛

Periodic Table

Interactive periodic table with all 118 elements. Color-coded categories, search, temperature slider.

Science ✦

Constellations

Interactive star map with 20+ major constellations. Pan, zoom, search, and learn mythology.

Science ℂ

Binary Converter

Convert between decimal, binary, octal, hex. Clickable bit toggles, bitwise ops, IEEE 754 breakdown.

Tool ♫

Piano

Playable piano keyboard with Web Audio synthesis. Mouse/keyboard input, recording, demo songs.

Music 🔒

Cryptography

Caesar, Vigenere, ROT13, Atbash, rail fence ciphers. Frequency analysis and Base64.

Tool ☉

Solar System

Interactive orrery with all 8 planets. Orbit trails, speed control, zoom, planet info on hover.

Science ✎

Markdown Editor

Side-by-side markdown editor with live preview. Toolbar, syntax highlighting, copy HTML output.

Tool ◉

Color Picker

HSV color wheel with HEX/RGB/HSL/CMYK conversion. Color harmonies and saveable palette.

Design {}

JSON Formatter

Format, minify, validate, and explore JSON with syntax highlighting and tree view.

Tool ⇌

Unit Converter

9 categories: length, weight, temperature, area, volume, speed, time, data, energy. 80+ units.

Tool ✍

Whiteboard

Free drawing canvas with pen, line, rectangle, circle, eraser, text tools. Undo and PNG export.

Art 🔒

Password Generator

Cryptographically secure random passwords, passphrases, PINs. Strength meter and history.

Tool ▣

Tetris

Classic Tetris with ghost piece, hard drop, levels, and mobile controls.

Game ■

Shadow Generator

CSS box-shadow builder with multiple layers, presets, and live preview.

Design ✔

Habit Tracker

Daily habit tracking with streaks, completion rates, and monthly calendar view.

Tool ○

3D Game of Life

Conway's Game of Life extended to three dimensions with isometric rendering.

Simulation 🔍

Word Search

Themed word search puzzle generator with timer and multiple word lists.

Game ∑

Famous Equations

Gallery of 20+ beautiful equations from physics, math, and information theory.

Science ⚑

World Flags

50+ country flags rendered in pure CSS. Gallery mode and quiz mode.

Game √

Scientific Calculator

Full scientific calculator with trig, log, memory, history, and keyboard input.

Tool ✖

Snake

Classic snake game with high scores, increasing speed, and mobile swipe controls.

Game ●

Pong

Classic Pong with 1-player, 2-player, and AI vs AI modes. Ball trails and speed control.

Game ¶

Lorem Ipsum

Placeholder text generator with 4 styles: Latin, Horatian, Hipster, and Tech.

Tool ■

Breakout

Brick breaker with levels, multi-hit bricks, particle effects, and touch controls.

Game ⬚

2048

Slide tiles to merge numbers. Arrow keys or swipe. High score saved locally.

Game ▶

Platformer

Side-scrolling platform game with procedural levels, enemies, and coins.

Game ⭕

Mind Map

Visual brainstorming tool with drag-and-drop nodes, color branches, and PNG export.

Tool ⏳

Science Timeline

40+ scientific discoveries from ancient times to modern era. Filter by category.

Science 9

Sudoku

Puzzle generator with easy/medium/hard difficulty. Notes mode, undo, and timer.

Game A

Typography

Font explorer with 10 Google Fonts. Size, spacing, weight, shadow controls and CSS output.

Design ♣

Memory Game

Card matching with 3D flip animation. 3 grid sizes, 5 themes, star rating.

Game ⏲

Focus Timer

Pomodoro timer with ambient sounds (rain, white noise, binaural beats). Session tracking and streaks.

Tool ⬜

Flexbox Playground

Interactive CSS flexbox explorer. Toggle every property, see results live, copy CSS output.

Design 💣

Minesweeper

Classic Minesweeper with easy (9x9), medium (16x16), and hard (30x16) grids.

Game ⬢

Hex Tiles

Hexagonal tile art generator with symmetry modes, fill tool, and multiple palettes.

Art ❝

Quote Wall

50+ curated quotes from scientists, philosophers, and writers. Filter, search, and favorite.

Inspiration ◎

Orbit Toy

Gravity sandbox. Click and drag to launch bodies around a central star. Colorful trails.

Simulation ✨

Fireworks

Click to launch fireworks with multiple explosion patterns and particle effects.

Art ✖

Tic Tac Toe

Play against a friend or an unbeatable minimax AI. Score tracking and smooth animations.

Game ⚫

Connect 4

Classic Connect Four game. Drop colored discs to connect four in a row against AI.

Game 🔠

Hangman

Guess the hidden word letter by letter. Multiple categories and difficulty levels.

Game 💡

Lights Out

Toggle puzzle where clicking a light flips it and its neighbors. Turn all lights off to win.

Game ⛅

Weather Observatory

Simulated weather dashboard with animated icons, 7-day forecast, sun arc, and AQI for 12 cities.

Tool ➕

Math Quiz

Speed math challenges with 7 modes. Track your score, streak, and accuracy over time.

Education 🧭

Digital Compass

Interactive compass with manual drag and device sensor modes. Save waypoints with bearings.

Tool 🏛

Maze Generator

Procedural maze generation with recursive backtracking, Kruskal's, Prim's, and binary tree algorithms. Play through or watch it solve.

Game ⏳

Countdown Timer

Count down to any event with days/hours/minutes/seconds display. Save multiple countdowns, preset events, progress bar.

Tool 🧪

Reaction-Diffusion

Gray-Scott reaction-diffusion simulator. Generate Turing patterns - mitosis, coral, spirals, spots, mazes. Interactive seeding.

Science 👁

Color Vision Simulator

See how images appear with protanopia, deuteranopia, tritanopia, and achromatopsia. Upload images, use camera, or test patterns.

Tool ⚡

Reflex Test

Test your reaction time with click or spacebar modes. Track best, average, and see your history visualized as a bar chart.

Game 📊

Sorting Visualizer

Watch sorting algorithms in action - Bubble, Selection, Insertion, Merge, Quick, and Heap sort with animated bar charts.

Education 🕰

World Clock

Analog and digital clocks for 8+ time zones. Auto-updating with day/night indicators and date display.

Tool 📡

Morse Code

Bidirectional text-to-Morse translator with audio playback, speed control, practice mode, and alphabet reference.

Education 🎨

Pixel Art Editor

Create pixel art with pencil, fill, line, rectangle tools. Multiple grid sizes, mirror mode, undo/redo, PNG export.

Art 🎲

Dice Roller

RPG dice roller supporting d4-d100 with dice notation parsing, advantage/disadvantage, roll history, and statistics.

Tool 🌈

Gradient Generator

CSS gradient builder with linear, radial, and conic types. Draggable color stops, angle control, presets, copy CSS.

Tool 🥁

Drum Machine

16-step sequencer with 8 synthesized drum sounds, BPM control, swing, preset patterns, and per-channel volume.

Music 🧩

Crossword Puzzle

Themed crossword puzzles with science, geography, and technology categories. Check answers, reveal words, timed play.

Game 🔤

ASCII Table

Complete 128-character ASCII reference with decimal, hex, octal, binary representations. Search, filter, and convert.

Reference 🔍

Regex Tester

Regular expression tester with live match highlighting, flag toggles, common patterns library, and cheat sheet.

Tool 📏

Pendulum Wave

Physics simulation of pendulums creating wave patterns. Adjustable count, speed, gravity, trail effects, and color modes.

Science ⚗

Chemistry Quiz

Element flashcards and quizzes covering all 118 elements. Study mode, difficulty levels, and session statistics.

Education ⚖

BMI Calculator

Body Mass Index calculator with metric and imperial units. Visual bar chart with category ranges and health info.

Tool ❓

Number Guess

Guess the secret number with visual thermometer feedback. Multiple difficulty levels and session statistics.

Game 🍅

Pomodoro Timer

Customizable Pomodoro technique timer with task list, session dots, auto break switching, and audio alerts.

Tool ∿

Fourier Visualizer

Decompose and visualize waves using Fourier series with interactive harmonics.

Math 🎨

Etch-a-Sketch

Classic retro drawing toy with knob controls, shake to clear, and save functionality.

Creative ⬡

Hex Game

Strategy board game on a hexagonal grid. Connect your sides before your opponent.

Game 🏰

Tower Defense

Strategic tower defense game with 4 tower types, waves of enemies, and upgrades.

Game 🔊

Noise Generator

Layered ambient noise machine with 8 channels, presets, oscilloscope, and sleep timer.

Audio 🌊

Wave Simulator

Explore wave physics: superposition, standing waves, Doppler effect, and ripple tanks.

Physics 🧩

Sudoku

Full Sudoku puzzle with unique solutions, notes mode, undo, timer, and 3 difficulties.

Puzzle 📚

Flashcards

Spaced repetition study cards with built-in decks for science, history, Latin, and math.

Education ⚖

Unit Converter

Convert between 10 categories of units: length, weight, temperature, speed, and more.

Tool 🎨

Color Picker

HSV color wheel with harmonies, saved palette, and all formats: HEX, RGB, HSL, CMYK.

Tool ⏱

Stopwatch

Precision stopwatch with lap tracking, best/worst highlighting, and animated ring display.

Tool 🐚

Fibonacci Visualizer

5 views of the Fibonacci sequence: golden spiral, sunflower, tree, bars, and phyllotaxis.

Math 💻

Binary Clock

Real-time clock displayed in binary. BCD and true binary modes, 12/24 hour toggle.

Tool 🎹

Virtual Piano

Playable piano keyboard with Web Audio synthesis, keyboard shortcuts, and recording.

Audio 🔍

Word Search

Generated word search puzzles with themed word lists, click-drag selection, and timer.

Puzzle ⚛

Periodic Table

All 118 elements color-coded by category with detailed info, search, and filters.

Science 🐍

Snake

Classic Snake game with smooth movement, high scores, speed scaling, and wall wrap toggle.

Game 🖩

Scientific Calculator

Full calculator with trig, log, memory, constants, history, and keyboard support.

Tool 🚢

Battleship

Classic Battleship vs AI with ship placement, hunt/target mode, and win/lose detection.

Game 🔒

Password Generator

Cryptographically random passwords with strength meter, passphrases, and history.

Tool 🔢

Base Converter

Convert between decimal, binary, octal, hex and any base 2-36 with bit visualization.

Math ✍

Markdown Preview

Split-pane Markdown editor with live preview, toolbar, and word count stats.

Tool ❓

Trivia Quiz

25 questions across science, history, geography, arts, and tech categories.

Education 🪆

Tetris

Classic Tetris with all 7 tetrominoes, ghost piece, hold, level progression.

Game 🌀

Mandelbrot Explorer

Interactive fractal viewer with zoom, pan, multiple color schemes, and Julia set toggle.

Math ⛀

Checkers

Checkers/Draughts vs AI with kings, mandatory jumps, and move highlighting.

Game ⌨

Type Racer

Typing speed test with WPM, accuracy tracking, multiple difficulties, and history.

Tool 📊

Chart Maker

Create bar, line, pie, donut, and scatter charts with editable data and PNG export.

Tool 🎵

Rhythm Game

4-lane rhythm game with falling notes, timing judgment, combos, and multiple songs.

Game ✔

Habit Tracker

Weekly habit grid with streak tracking and localStorage persistence.

Productivity 🌬

Breathing Exercise

5 guided breathing patterns with animated circle visualization.

Wellness 💻

System Info

Browser, display, hardware, network, and feature detection.

Utility ↔

Text Diff

LCS-based line diff with add/delete/same highlighting.

Utility 🧬

Game of Life

Conway's cellular automata with patterns, speed control, and infinite canvas.

Simulation 🖌

Whiteboard

Freeform drawing canvas with tools, colors, and export.

Creative ☄

Asteroids

Classic arcade space shooter with thrust, wrap-around, and progressive difficulty.

Game 💰

Budget Tracker

Track income and expenses with categories and charts.

Productivity 🧩

Slide Puzzle

Classic 15-puzzle with move counter and timer.

Game ✍

Drawing Guess

Draw prompts and guess what others drew.

Game 📝

Notepad

Multi-tab note-taking with auto-save, download, and font options.

Productivity {

JSON Formatter

Beautify, minify, validate JSON with syntax highlighting and stats.

Developer 🔗

URL Encoder/Decoder

URL encode/decode, Base64, and URL parser with component breakdown.

Developer ⬜

Ultimate Tic-Tac-Toe

Tic-tac-toe within tic-tac-toe - strategic board game with undo.

Game 💻

Hacker Typer

Press any key to look like a Hollywood hacker. Multiple color styles.

Fun 📋

Kanban Board

Drag-and-drop task management with columns and priority colors.

Productivity 😀

Emoji Picker

Search and copy emojis by category with recently used tracking.

Utility 🔴

Simon Says

Classic memory game with colored quadrants and sound.

Game 🔢

Word Counter

Text analysis with word frequency, readability score, and stats.

Utility 👾

Space Invaders

Classic arcade shooter with shields, UFO bonus, and progressive waves.

Game 🎨

Color Match

Recreate target colors with RGB sliders - scored on accuracy.

Game ⏳

Event Countdown

Customizable countdown timer with presets, saves, and progress bar.

Utility 📦

Loot Generator

RPG treasure generator with 6 rarity tiers, weapons, armor, and flavor text.

Fun 📏

Screen Ruler

Measure pixels with line, rectangle, and circle tools plus grid overlay.

Developer 🔠

Anagram Solver

Find words hidden in your letters with interactive tile rack.

Game 🐦

Flappy Bird

Tap to fly through pipes with progressive difficulty and high scores.

Game 💱

Currency Converter

Convert between 20+ currencies with swap and conversion history.

Utility ⌨

Typing Practice

Touch typing lessons with on-screen keyboard and finger guidance.

Education 🟡

Pac-Man

Classic maze game with ghost AI, power pellets, and level progression.

Game 🍳

Recipe Scaler

Scale recipe ingredients with fraction support and unit conversion.

Utility 💠

Matrix Rain

Digital rain screensaver with color themes, speed, and hidden messages.

Visual 💵

Tip Calculator

Calculate tips with percentage presets, bill splitting, and rounding.

Utility Ⅰ

Roman Numerals

Convert between Arabic and Roman numerals with reference grid and quiz mode.

Education 🖼

Placeholder Image

Generate placeholder images with custom size, colors, and text for mockups.

Developer 🪙

Decision Maker

Coin flip, dice roll, spin wheel, and random picker for making decisions.

Fun 🧱

Brick Breaker

Breakout arcade game with power-ups, multi-hit bricks, and levels.

Game 💠

Shadow Generator

CSS box-shadow generator with multiple layers, presets, and live preview.

Developer ☀

Solar System

Interactive solar system with all 8 planets, speed control, and planet info.

Simulation 🎶

Audio Visualizer

Real-time audio visualization using microphone with multiple render modes.

Creative 📄

Code Snippets

Save and organize code snippets with syntax highlighting and search.

Developer 🎱

Magic 8-Ball

Ask a yes/no question and shake for your answer. 20 classic responses.

Fun 🌐

IP Address Tools

Subnet calculator, IP converter, and private range reference.

Developer 🌻

Gratitude Journal

Daily gratitude practice with prompts, streaks, and entry history.

Wellness 🕒

Analog Clock

Beautiful analog clock with Roman numerals and multiple face styles.

Utility 🪐

Gravity Sandbox

N-body gravity simulation with trails, collision, and presets.

Simulation 🌈

Palette Generator

Generate color palettes with harmony algorithms and contrast checking.

Creative 🐹

Whack-a-Mole

Classic whack-a-mole with golden moles, bombs, and combos.

Game 📐

CSS Grid Game

Learn CSS Grid through interactive puzzles with live preview.

Education 🖨

ASCII Art Generator

Generate FIGlet-style ASCII text art in multiple font styles.

Creative ⌨

Keyboard Tester

Test every key with visual keyboard layout and coverage tracking.

Utility ⭐

Favicon Generator

Create favicons from text, emoji, or shapes with live preview.

Design 🎮

Doodle Jump

Bounce from platform to platform in this endless jumper.

Game ⏰

Crontab Builder

Visual cron expression generator with live preview.

Dev Tool ⚫

Reversi

Classic strategy board game with AI opponent.

Game 🔤

Font Pairing

Find perfect font combinations for your designs.

Design #

Number Facts

Discover fascinating mathematical and historical facts about numbers.

Education 💡

Lights Out 2

Advanced light toggling puzzle with multiple grid sizes.

Puzzle 📏

Resistor Calculator

Decode resistor color bands with visual reference chart.

Electronics 🎨

CSS Filter Lab

Real-time CSS filter playground with presets and code export.

Design █

Progress Bar Generator

Design CSS progress bars with solid, gradient, striped, and animated styles.

Design ▭

Aspect Ratio Calculator

Calculate ratios, resize dimensions, and browse common formats.

Utility ☃

Character Map

Browse Unicode characters by category with click-to-copy.

Utility ✍

Lorem Generator

Generate placeholder text in 5 styles with HTML output.

Dev Tool ▣

QR Code Generator

Generate QR codes from text and URLs with customization.

Utility ♠

Blackjack

Classic card game with betting, splitting, and double down.

Game ⌚

Chess Clock

Dual timer with Fischer increment and time control presets.

Utility 🙈

Blind Type

Type text without seeing the screen, then see your accuracy.

Game ∿

Wavelength

Audio frequency tone generator with waveform visualization.

Audio 🌈

Color Wheel

Interactive HSL color wheel with harmony and format display.

Design 🔠

Text Case Converter

Convert between 13 text cases: camelCase, snake_case, UPPER, and more.

Utility 📝

Line Counter

Code-style editor with line numbers, text stats, and line tools.

Dev Tool 🐙

GitHub Profile Card

Generate profile cards from any GitHub username with top repos.

Dev Tool 📦

JS Minifier

Minify and beautify JavaScript with size comparison stats.

Dev Tool 🂡

Solitaire

Classic Klondike solitaire with drag-and-drop and auto-complete.

Game 📅

Date Calculator

Date difference, age calculator, business days, and date math.

Utility 🧙

RPG Character Generator

D&D style character creation with races, classes, and stat rolling.

Game 📷

Photo Booth

Webcam photo booth with filters, countdown, and photo strips.

Creative 🎪

Word Ladder

Change one letter at a time to transform words with hints.

Puzzle 🎬

CSS Animation Generator

Visual keyframe editor with presets and CSS code export.

Design 💻

HTML Preview

Live HTML/CSS/JS editor with instant preview and templates.

Dev Tool 🌳

JSON Tree Viewer

Interactive collapsible tree view for JSON data with path display.

Dev Tool ⚡

Browser Speed Test

Benchmark your browser's JavaScript performance across 8 tests.

Utility 💣

Bomb Sweeper

Minesweeper with hexagonal tiles and three difficulty levels.

Game 🎨

Pixel Canvas

Place-style pixel art canvas with 16-color palette and zoom.

Creative 📈

Math Plotter

Graph mathematical functions with expression parser and zoom.

Education 🃏

Card Match

Playing card memory game with flip animations and combos.

Game 🔐

Classical Ciphers

Caesar, Vigenere, Atbash, Rail Fence ciphers with brute force.

Education 🥁

Drum Kit

Virtual drum kit with keyboard controls and beat recording.

Music ≡

Truth Table Generator

Generate truth tables for logical expressions with 8 operators.

Education ⬣

SVG Maker

Draw vector shapes and export SVG code with undo support.

Design ⚙

.htaccess Generator

Visual Apache configuration builder with security headers and caching.

Dev Tool 📊

Slideshow Maker

Create presentations with multiple layouts and themes.

Creative ⚔

Battle Cards

Collectible card battle game with 6 element types and AI opponent.

Game 🎵

Binaural Beats

Brainwave frequency generator for focus, relaxation, and sleep.

Audio 🏗

Tower Blocks

Stack blocks perfectly in this precision timing game.

Game 🌈

Color Blend

Mix colors with blend modes and generate gradients with WCAG contrast.

Design 🔢

Number Base Converter

Convert between bases 2-36 with bitwise operations and IEEE 754.

Dev Tool &

HTML Entity Reference

Searchable HTML entity reference with click-to-copy.

Dev Tool 📖

Reading Time Calculator

Estimate reading time with Flesch readability analysis.

Utility ↔

Diff & Merge

Compare two texts with LCS-based line diff and stats.

Dev Tool ☢

Isotope Decay

Radioactive decay simulator with half-life visualization.

Science 🔤

Type Scale

Typography scale generator with ratio presets and CSS export.

Design ⭐

Constellation Maker

Draw constellations on a night sky with preset real patterns.

Creative 💻

Git Reference

Searchable git command reference with categories and examples.

Dev Tool 🏷

Meta Tags Generator

Generate SEO meta tags, Open Graph, and Twitter Cards.

Dev Tool 🐍

Snake vs Snake

2-player snake battle on the same keyboard with power-ups.

Game 🖼

Pixelate

Apply pixelation effects to images with adjustable block size.

Tool 🏗

Maze Generator

Generate and solve procedural mazes with various algorithms.

Generator 🎯

Hangman

Classic word guessing game with categorized words and keyboard input.

Game 📊

CSV Tool

View, edit, sort and filter CSV data in a spreadsheet-like interface.

Tool △

Tangram

Arrange geometric puzzle pieces to form shapes.

Puzzle 🎵

Chord Progressions

Explore common chord progressions with audio playback in any key.

Music 🦇

Cavern Run

Flappy-style cavern flying game with score tracking.

Game ⚛

Periodic Table

Interactive periodic table with element details and category filtering.

Reference 🧩

Rubik's Cube

2D net view Rubik's cube simulator with all standard moves.

Puzzle 🌍

Earth View

Wireframe globe with continents, cities, and drag-to-rotate.

Visualization 📦

Sokoban

Classic box-pushing puzzle game with multiple levels.

Puzzle ✨

Particle Life

Emergent behavior simulation with colored particles attracting and repelling.

Simulation 🎶

Music Visualizer

Audio visualization with multiple modes: bars, waveform, circular, particles.

Audio 🏛

Tower of Hanoi

Classic disk puzzle with auto-solve animation and adjustable disk count.

Puzzle 🔍

Regex Playground

Interactive regex tester with match highlighting, groups, and presets.

Tool 🎮

Breakout

Brick-breaking arcade game with power-ups and multiple levels.

Game 💾

Hex Editor

View text as hexadecimal with offset and ASCII display.

Tool 🌊

Wave Simulator

Visualize wave interference, standing waves, Doppler effect, and beats.

Physics 🎨

Eyedropper

Pick colors from generated gradients with palette building.

Tool ☄

Asteroids

Classic space shooter with ship physics and asteroid splitting.

Game 🎹

Piano

Playable keyboard instrument with multiple waveforms and keyboard mapping.

Music 🧬

Cellular Automata

Game of Life, Highlife, Seeds, and more with preset patterns.

Simulation 🛰

Orbital Mechanics

Launch satellites around a planet with realistic gravity simulation.

Physics ⚡

Circuit Simulator

Build circuits with batteries, resistors, LEDs, and switches.

Science 🔢

2048

Classic sliding tile number puzzle with smooth animations.

Puzzle 🌀

Mandelbrot

Fractal explorer with zoom, multiple color palettes, and Julia set mode.

Math 🗺

Pathfinder

Visualize A*, Dijkstra, BFS, and DFS pathfinding algorithms.

Algorithm 📈

Zipf's Law

Analyze word frequency distribution with log-log plot visualization.

Linguistics 🧠

Brain Teasers

Collection of riddles, logic puzzles, and lateral thinking challenges.

Puzzle ⌨

Typewriter Effect

Generate CSS typewriter animations with customizable text and styles.

Generator 📊

Sort Visualizer

Watch bubble, merge, quick, heap sort algorithms step by step.

Algorithm ♚

Chess Puzzles

Mate-in-one chess puzzle trainer with hints and scoring.

Game 📐

Flexbox Playground

Interactive CSS flexbox property explorer with live preview.

Tool ⛅

Weather Sim

Simulated weather dashboard with forecasts and temperature graphs.

Simulation ●

Dots & Boxes

Classic pencil-and-paper dots and boxes game with AI opponent.

Game ⚙

Gears

Meshing gear train simulation with configurable gear counts and ratios.

Simulation ☁

Word Cloud

Generate word clouds from text with spiral layout and frequency sizing.

Visualization △

Penrose Tiling

Generate aperiodic Penrose tilings with adjustable subdivision depth.

Math 🌈

Gradient Generator

Create and customize CSS gradients with live preview.

Design ⚡

Reaction Test

Test your reaction time with visual challenges.

Game 🎵

Rhythm Game

Hit falling notes in time with the music.

Game 🎨

Sprite Editor

Create pixel art sprites with drawing tools.

Creative 📊

Data Structures

Visualize stacks, queues, trees, heaps, and hash tables.

CS 💧

Water Sort

Sort colored water into matching bottles.

Puzzle 👁

Raycaster

Wolfenstein-style 3D rendering from a 2D map.

Graphics 📊

Bar Chart Maker

Create animated bar charts from custom data.

Data ⚗

Chemical Balancer

Balance chemical equations using matrix reduction.

Science 📝

Code Editor

Write and run JavaScript in the browser with tabs and examples.

Tool 🖼

Pixel Sorter

Create glitch art by sorting pixels algorithmically.

Art ✏

Vector Draw

SVG-based vector drawing tool with shapes, colors, and export.

Creative ⚔

Roguelike

Procedural dungeon crawler with combat, items, and fog of war.

Game 🎨

Color Mania

Fast-paced Stroop effect color matching challenge.

Game ➕

Math Race

Speed mental arithmetic with difficulty levels and scoring.

Game 🔗

Wiki Game

Build word chains through semantic connections.

Puzzle 🖌

Fluid Paint

Watercolor-style painting with fluid dynamics and blending.

Creative 🤪

Emoji Mixer

Combine two emoji to create new mashup results.

Fun ✨

Particle Art

Draw with living particles in 7 modes: fountain, sparkle, orbit, galaxy.

Creative 🍿

Popcorn Words

Type the bouncing words before they escape the screen.

Game 🃏

Card War

Classic card game of War with auto-play and war animations.

Game 🧩

Drag Puzzle

Image jigsaw puzzle with drag-and-drop pieces and snap-to-grid.

Puzzle 🎶

Music Maker

16-step beat sequencer with 8 synthesized instruments and presets.

Audio 🏎

Pixel Race

Top-down pixel art racing game with AI opponents.

Game 🔐

Cipher Text

Code-breaking puzzles with Caesar, Vigenere, substitution ciphers.

Puzzle 🌌

Galaxy Generator

Procedural spiral and elliptical galaxy creation with dust lanes.

Graphics 🐾

Animal Quiz

Personality quiz: discover what animal matches your traits.

Fun 📚

Tower of Hanoi

Classic disk-moving puzzle with auto-solve and adjustable difficulty.

Puzzle ⚖

BMI Calculator

Body mass index calculator with metric/imperial and health ranges.

Health 💻

Bitmask Explorer

Interactive 16-bit binary viewer with bitwise AND, OR, XOR, NOT, shift.

CS ☯

I Ching Oracle

Ancient Chinese Book of Changes divination with hexagrams.

Mystical ▲

Tangrams

Classic 7-piece tangram puzzles with 20+ target silhouettes.

Puzzle 💥

Paint Splatter

Realistic paint splatter art with drip physics and brush tools.

Creative 🔤

Word Scramble

Unscramble letters across 6 categories with 200+ words.

Game 🌀

Motion Blur

Create mesmerizing motion trail art with symmetry and effects.

Art 🌡

Climate Viz

Interactive climate data visualization with historical temperatures.

Data 📟

Circuit Board

Procedural PCB circuit board pattern art generator.

Art ✊

Rock Paper Scissors

Classic and extended RPS against a pattern-learning AI.

Game 🔢

Matrix Calculator

Matrix add, multiply, transpose, determinant with visual grid.

Math 🎨

Color Harmony

Color wheel with complementary, triadic, and analogous harmonies.

Design 📜

Name Generator

Generate fantasy, sci-fi, medieval, tavern, planet, and ship names.

Creative ●

Bubble Shooter

Pop matching colored bubbles in this classic arcade puzzle game.

Game ♚

Chess Engine

Play chess against an AI opponent with move validation.

Game ⦾

DNA Sequence

Visualize and analyze genetic sequence data with color-coded bases.

Science ☷

Grid Maker

Create custom grid layouts with flexible row and column configurations.

Design ☀

Light Table

Compare images side by side with overlay and difference modes.

Design ✦

Star Chart

Interactive night sky constellation map with star identification.

Science ⏳

Countdown Timer

Count down to any event with presets, saved timers, and live progress.

Utility 𝖠

Font Preview

Preview text in 22 system and web fonts with adjustable size, weight, and spacing.

Design ⚑

Flag Quiz

Identify countries by their flag emoji with scoring and streaks.

Game ⬢

ASCII 3D

Rotating 3D shapes rendered in ASCII characters with lighting.

Visual ⚛

Periodic Table

Interactive periodic table with all 118 elements, color-coded by category.

Science 🍲

Recipe Scaler

Scale recipe ingredients with unit conversion and preset recipes.

Utility ♫

Music Theory

Interactive piano with scales, chords, and intervals using Web Audio.

Music ☉

Solar System

Animated solar system with orbiting planets and info panels.

Science ▒

Pixel Font

Design pixel typefaces on an 8x8 grid with live text preview.

Design ⮕

Flowchart Maker

Drag-and-drop flowchart editor with shapes, connections, and PNG export.

Productivity •

Morse Translator

Translate between text and Morse code with audio playback.

Utility ⇩

Speed Reader

RSVP speed reading with focus letter highlighting and WPM control.

Productivity 🏆

Bracket Builder

Create single-elimination tournament brackets with click-to-advance.

Utility ∑

Math Flash Cards

Timed arithmetic drills with scoring, streaks, and difficulty levels.

Education 🎨

Emoji Art

Create emoji mosaic art on a grid with categories, fill tool, and clipboard export.

Creative ⌖

Pathfinder

Visualize A*, Dijkstra, BFS, DFS pathfinding with maze generation.

Algorithm ⏰

Binary Clock

Real-time binary clock with LED-style display and color themes.

Utility ❀

Kaleidoscope

Interactive kaleidoscope pattern generator with symmetric reflections.

Visual 🥁

Drum Machine

8-track step sequencer with Web Audio synthesis and preset patterns.

Music ✱

Regex Tester

Test regular expressions with match highlighting and pattern library.

Developer 👁

Color Blind Sim

Simulate 7 types of color vision deficiency with spectrum comparison.

Accessibility ∿

Gradient Waves

Mesmerizing animated wave patterns with 6 color schemes and PNG export.

Visual ▷

CSS Animator

Build CSS keyframe animations visually with 8 presets and code export.

Developer ⚡

Electron Config

Visualize electron configurations with orbital diagrams and shell models.

Science 📈

Stock Ticker

Simulated stock market with portfolio trading and news events.

Simulation 📷

ASCII Camera

Real-time webcam to ASCII art conversion with color modes.

Visual 🏝

Island Generator

Procedural island map generator with biomes and terrain.

Procedural ⌨

Type Trainer

Touch typing lessons with virtual keyboard and WPM tracking.

Education 🎮

Platformer

Pixel art platformer game with multiple levels and enemies.

Game ⛅

Weather Dashboard

Simulated weather dashboard with forecasts and animated icons.

Simulation ⬣

SVG Icon Builder

Compose SVG icons from basic shapes with code export.

Design ❝

Quote Generator

Inspiring quotes from philosophy, science, literature, and more.

Creative 🔠

Anagrammer

Find all possible words hidden within your letters.

Word Game 🖼

Pixel Art Studio

Full-featured pixel art editor with tools, undo, and PNG export.

Creative ⬜

Crossword

Interactive crossword puzzles with clues and validation.

Word Game 🎹

Synth Pad

Multi-voice synthesizer with waveforms and effects.

Audio 🕸

Network Graph

Interactive node graph builder with force-directed layout.

Visualization ⏲

Recipe Timer

Multi-step cooking timer with alerts and presets.

Utility ⭐

Constellations

Interactive star map with constellation lines and info.

Science ✅

Habit Tracker

Track daily habits with streaks and progress visualization.

Productivity 🏛

Roman Numerals

Bidirectional converter with quiz mode and reference chart.

Education 🃏

Card Flip Memory

Match emoji pairs with difficulty levels and best scores.

Game 📊

Stats Calculator

Comprehensive statistical analysis with histogram visualization.

Math 🌊

Wave Generator

Visualize and play audio waveforms with Web Audio API.

Audio 💰

Budget Calculator

Track income and expenses with pie chart visualization.

Finance 📦

Bin Packing

Visualize bin packing algorithms with step-through mode.

Algorithm ⚡

Ohm's Law

Circuit calculator with visual meter and resistor color bands.

Electronics 🌍

Geography Quiz

Test your knowledge of world capitals and countries.

Quiz 🔐

Text Encoder

Encode and decode text in Base64, hex, binary, ROT13, and more.

Utility 🔌

Logic Circuits

Build logic gate circuits with real-time signal propagation.

Electronics 📐

Unit Circle

Interactive trigonometry explorer with all six trig functions.

Math 🎲

Dice Roller

Roll any combination of polyhedral dice with stats and history.

Game 🎨

CSS Filter Lab

Experiment with CSS image filters and export the code.

Design 🌀

Spirograph Studio

Create hypotrochoid and epitrochoid curves with color presets.

Creative 🍅

Pomodoro Pro

Focus timer with circular progress, task lists, and session tracking.

Productivity ᚠ

Rune Generator

Elder Futhark runes with transliteration and casting readings.

Mythology 🗺

Fantasy Map Maker

Draw terrain maps with water, forests, mountains, and markers.

Creative 🔢

Base Converter

Convert numbers between bases 2-36 with bit visualization.

Math 🥁

Beat Maker

16-step drum sequencer with 6 instruments and genre presets.

Audio 📏

Graph Paper

Generate printable grid paper in square, isometric, hex, and dot styles.

Utility 🎸

Guitar Fretboard

Explore scales, chords, and intervals across the guitar neck.

Music 🎨

Color Mixer

Blend colors with additive, subtractive, and average modes.

Design 📅

History Timeline

Interactive timeline of key moments in human history.

Education 🎯

Life Goals

Track aspirations with categories, progress bar, and persistence.

Productivity 🧩

Sudoku

Generate and solve Sudoku puzzles at three difficulty levels.

Puzzle ♞

Chess Openings

Step through 20+ chess openings with board visualization.

Game 🎨

Paint by Numbers

Color-by-number designs with progress tracking.

Creative 📷

Photo Filter

Apply pixel-level filters to uploaded images with before/after view.

Image 🌈

Gradient Maker

Build CSS gradients with color stops and export code.

Design 🌧

Weather Sounds

Mix ambient weather sounds for relaxation and focus.

Audio ⚡

Reaction Time

Test visual and audio reaction speed with stats tracking.

Game ⌨

Keystroke Visualizer

See key codes, locations, and modifiers for any keypress.

Developer 🌐

Language Detector

Identify text language using trigram frequency analysis.

Language 😀

Emoji Search

Search, browse, and copy emojis by category and keyword.

Utility 🔐

Cipher Tool

6 classical ciphers with frequency analysis and brute force.

Crypto 🌎

Earth Facts

40+ fascinating facts about our planet organized by category.

Science 💻

Matrix Rain

Customizable Matrix-style digital rain with multiple character sets.

Visual 🗣

Voice Synth

Text-to-speech studio with voice selection, rate, and pitch controls.

Audio ✈

Paper Airplane

2D flight physics simulator with launch angle, force, and wind.

Physics ⠀

Braille Tool

Bidirectional Braille translator with interactive cells and learning mode.

Education 🪐

Planet Weight

Calculate your weight on all planets, Moon, and Sun.

Science 🪢

Knot Guide

12 essential knots with step-by-step instructions and categories.

Practical 💣

Minesweeper

Classic mine-clearing puzzle with 3 difficulty levels and timer.

Game ▣

QR Code Studio

Generate QR codes for text, URLs, WiFi, email, and phone numbers.

Utility 📊

Zipf's Law

Analyze word frequency distributions in text.

Analysis π

Pi Calculator

Compute digits of pi using various algorithms.

Math ▦

SVG Patterns

Generate repeating SVG tiling patterns.

Design ✍

Phrase Generator

Build random phrases and creative text.

Text ⚡

Resistor Calc

Decode resistor color bands to values.

Electronics 🌈

Wavelength Viz

Explore the electromagnetic light spectrum.

Science ★

Symbol Chart

Browse and copy Unicode symbols with codes.

Utility A

Font Stack Builder

Preview and build CSS font stacks.

Design ◉

Abelian Sandpile

Watch fractal patterns emerge from simple rules.

Simulation 📚

Virtual Bookshelf

Organize your reading list with visual book spines.

Utility ⚛

Periodic Table

Interactive periodic table with all 118 elements.

Science •

Morse Trainer

Learn and practice Morse code with audio.

Education █

Binary Art

Create pixel art with binary 0s and 1s.

Art ▣

Nonogram

Picross-style logic puzzles on a grid.

Puzzle ✍

Calligraphy

Digital calligraphy with pressure-sensitive strokes.

Art 🔍

Float Inspector

Visualize IEEE 754 floating point representation.

CS 💠

Text Shadow Lab

Design layered CSS text shadows with presets.

Design ↔

Number Line

Visualize numbers, fractions, and operations.

Math 🎨

Etch-a-Sketch

Classic drawing toy with knobs and shake-to-erase.

Art 🎨

CSS Color Names

Browse all 148 named CSS colors with search and sort.

Design ◯

Fourier Drawing

Draw shapes and watch Fourier epicycles recreate them.

Math ▣

Rubik's Cube

2D Rubik's cube simulator with all face moves.

Puzzle ▧

Slide Puzzle

Classic 15-puzzle sliding tile game.

Puzzle △

Tangram

Arrange 7 pieces to match target shapes.

Puzzle ⠀

Braille Writer

6-key Braille input simulator with translation.

Education ⌨

Type Racer

Test your typing speed with WPM tracking.

Game □

CSS Box Model

Interactive CSS box model with margin, border, padding controls.

Design ✂

CSS Clip Path

Create and preview CSS clip-path shapes.

Design 📖

Vocab Builder

Expand your vocabulary with flashcard drills.

Education ♚

Chess Board

Set up chess positions and export FEN notation.

Game ↕

Sort Visualizer

Watch 7 sorting algorithms compete with animated bars.

CS ⌖

Pathfinding

Visualize BFS, DFS, Dijkstra, and A* on a grid.

CS ∿

Wavelets

Wavelet transform visualizer with multiple families.

Math ▣

Tetris

Classic Tetris with ghost piece, levels, and scoring.

Game ✕

Tic-Tac-Toe

Play tic-tac-toe against minimax AI or a friend.

Game ●

Mastermind

Code-breaking game with colored pegs and feedback.

Game {

JSON Formatter

Format, validate, and syntax-highlight JSON data.

Dev ☷

CSV Viewer

Parse CSV into sortable, filterable tables.

Dev ⌨

Keypress Viz

Visualize keyboard events with codes and timeline.

Dev 📏

CSS Units

Convert between all CSS length units with reference.

Design ▣

Game of Life

Conway's cellular automaton with preset patterns and zoom.

Simulation ●

Pendulum Wave

Mesmerizing pendulum wave patterns with trail mode.

Physics 🔥

Pixel Fire

Classic DOOM-style fire effect with color palettes.

Visual 🎒

Knapsack

0/1 knapsack problem with DP table visualization.

CS 🌳

Binary Tree

BST visualizer with insert, delete, search, traversals.

CS #

Hash Table

Hash table with chaining and probing visualization.

CS ↔

Diff Viewer

Compare two texts with line-by-line diff highlighting.

Dev ⏰

Crontab Helper

Build cron expressions with human-readable descriptions.

Dev ℂ

Bit Calculator

Toggle individual bits and see values in all bases.

CS ⇄

Permutations

Generate permutations and combinations with formulas.

Math ⚛

Particle Sim

Physics particle simulation with gravity, collisions, and forces.

Simulation ⭾

Stack Machine

Virtual stack-based computer with assembly instructions.

CS ●

Graph Coloring

Color graph vertices with minimum colors using greedy algorithms.

CS ⛓

Linked List

Visualize linked list operations - insert, delete, reverse, search.

CS ⑂

Huffman Tree

Build Huffman coding trees for text compression.

CS ♫

Music Scales

Explore musical scales, modes, and chord structures.

Music ✱

Regex Visualizer

Test regular expressions with live highlighting and match details.

Dev ▦

DP Matrix

Visualize dynamic programming problems step by step.

CS ☠

Steganography

Hide secret messages in plain text using zero-width characters.

Security ✨

FizzBuzz

The classic coding challenge visualized with customizable rules.

CS ℙ

Prime Numbers

Sieve of Eratosthenes, primality testing, and factorization.

Math ⚙

Brainfuck

Esoteric programming language interpreter with memory tape.

CS ⚇

Base64 Tool

Encode and decode Base64 with step-by-step visualization.

Dev ✍

Lorem Generator

Generate placeholder text in multiple styles and lengths.

Dev ▣

QR Code Gen

Generate QR codes from text and URLs.

Dev ⚔

Caesar Cipher

Classic shift cipher with alphabet mapping and brute force.

Security ♠

HTML Entities

Browse and search all named HTML entities with converter.

Dev ≣

Text Analyzer

Word count, readability scores, letter frequency, and more.

Dev ⚖

Token Counter

Estimate LLM token counts and API costs for any text.

AI ☷

SQL Formatter

Beautify and syntax-highlight SQL queries with presets.

Dev 🌍

Time Zones

World clocks, time conversion, and timezone timeline.

Utility ⬆

SemVer Tool

Semantic version bumper, comparator, and range checker.

Dev 🔗

URL Parser

Dissect URLs into protocol, host, path, query, and hash.

Dev █

ASCII Art Gen

Convert text to ASCII art with multiple font styles.

Art ⬡

BFS/DFS Visual

Animate BFS and DFS graph traversal algorithms.

CS ▲

Heap Sort

Visualize heap building and heap sort step by step.

CS ⑂

AVL Tree

Self-balancing BST with animated rotations.

CS ▦

Matrix Calc

Matrix operations: multiply, transpose, determinant, inverse.

Math ♛

N-Queens

Solve the N-Queens problem with animated backtracking.

CS 📖

Build Journal

The complete log of how this site was built, written by the AI that built it.

Meta