Apps built by everyone else

The hand-drawn whiteboard loved by millions — sketch, diagram, export. Live right here

The developer's Swiss Army knife — 80+ handy tools for tokens, JSON, crypto and more

The NES classic reborn in the browser — grab the crosshair, ducks won't shoot themselves

Fill in the form, watch the invoice build itself, print a clean PDF — done

The official 3D scene editor for three.js — add objects, materials, lights, export

Jake Archibald's GUI for SVGO — paste an SVG, watch it shrink, download the result

Futuristic WebGL anti-gravity racer — pure speed, entirely in your browser

A real image editor in the browser — layers, filters, effects, no install

Waveform audio editor — trim, fade, effects, export. Drop a file and go

Drag the sliders, see what a mortgage really costs — and what extra payments save

Winamp 2 reborn in the browser — skins, EQ, and a llama-whippin' demo track

The original 2048 by Gabriele Cirulli — merge the tiles, chase the 2048 square

The classic interactive way to finally understand git — branch, rebase, conquer

The friendliest SVG editor on the web — draw vectors, export clean SVG

A TR-808 drum machine in your browser — program a beat, tweak, jam

Tetris bent around a hexagon — fast, hypnotic, dangerously addictive

Gameboy-style Tetris with satisfying keys, persistence and 30k GitHub stars of polish

The flappy bird that never dies — one tap, infinite rage, open source

Trip over, tab chaos? Add who paid what — get the fewest transfers to settle

Distraction-free markdown with live preview, sync scroll and one-click export

Paste a path's d attribute, edit points visually — the tool every SVG dev needs

Learn vocabulary through your fingertips — typing drills for words that stick

Learn CSS flexbox by guiding frogs to their lilypads — 24 levels of aha-moments

Learn CSS selectors by picking plates, apples and fancy bentos — 32 tasty levels

Regex from zero to advanced — interactive lessons, cheatsheet and playground

The most-forked admin dashboard on GitHub — charts, widgets, full demo pages

Start Bootstrap's classic admin theme — a clean dashboard to make your own

Design gradient mesh wallpapers — shuffle, tweak, export 4K PNG or CSS

Pixel-art and sprite editor with animation frames, layers and a live preview

The minimalist text adventure that begins with a dying fire in a cold room