Capsule Web

Open a .capsule file and run it right here. Everything runs client-side in your browser. Local files stay on your device, or you can open and save files in your Google Drive.

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