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Theia IDEStackBlitz
Free

Free and open source.

 Freemium

Free to start in the browser, with paid plans for teams.

Windows, macOS, Linux, Web Web
  • Runs VS Code extensions from Open VSX
  • Available on desktop and online
  • Runs Node.js in the browser with no local setup
  • Environments boot in milliseconds
  • Uses Open VSX rather than the Microsoft extension marketplace
  • Smaller user community than VS Code
  • Focused on JavaScript and web projects
  • Depends on a modern browser with WebAssembly support
Downloadable app, Web application Web application
Open source Closed source
License not stated License not stated
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Works offline

Checked September 23, 2026

Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.