Capsule Web

Open a .capsule file and run it right here. It runs entirely in your browser and never leaves your device.

Drop your file here or browse files

Supports single-file Capsule databases and standalone HTML documents

.capsule .html

Instant Exploration

Or try a starter template

Fully functional single-file apps with local SQLite storage ready to test

Runs in an isolated sandbox with zero network access · Changes stay in memory until you save