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Eclipse IDEGeany
Free

The open-source application is available without a license fee.

 Free

Free and open source under the GPL.

Windows, macOS, Linux Windows, macOS, Linux
  • Huge plugin marketplace covering languages and domains other IDEs ignore
  • Entirely open source and free for commercial use
  • Starts almost instantly and uses very little memory
  • Depends only on GTK, so it installs cleanly on minimal Linux systems
  • The workspace and perspective model feels dated and confuses newcomers
  • Plugin quality varies widely and conflicts are common
  • No language server support in the core, so completion is simpler than a modern IDE's
  • Debugging needs a plugin and is basic
Downloadable app Downloadable app
Open source Open source
License: EPL-2.0 License: GPL-2.0
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked September 22, 2026

Checked September 21, 2026

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