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Theia IDEPulsar
Free

Free and open source.

 Free

The software is free under its open-source licence. Hosting, hardware and external…

Windows, macOS, Linux, Web Windows, macOS, Linux
  • Runs VS Code extensions from Open VSX
  • Available on desktop and online
  • It revives the Atom package ecosystem with its own package registry, so the hackable editor and its plugins…
  • Uses Open VSX rather than the Microsoft extension marketplace
  • Smaller user community than VS Code
  • It is still Electron-based and inherits Atom's memory use and startup time, with a much smaller maintainer team.
Downloadable app, Web application Downloadable app
Open source Open source
License not stated License: MIT
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked September 23, 2026

Checked September 22, 2026

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