Weekly Picks

An explorable O'Neill cylinder you can walk around in

Sold prices for secondhand fashion, in one API call

An interactive tribute to Steve Jobs (1955–2011)

Full simulated companies for your AI agents to run against

Claim a pumpkin, carve it, leave it glowing

Flip it, stick the landing

Free random word generator with filters and one-click copy

Real-time world war on a live 3D globe in your browser

Fast, small, secure-by-default package manager for JS

Every data visualization tool, in one place

Learn Python by drawing robots on a canvas

Balance the scale by eye — one puzzle a day