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Project GraphHeimer
Free

Free download; the project accepts sponsorship.

 Free

The open-source software is available without a license fee. Hosting, hardware and…

Windows Windows, Linux
  • Many node types including LaTeX, images and SVG
  • Keyboard-driven tree building with automatic layout
  • Supports automatic layouts and image exports.
  • Website and documentation are mainly in Chinese
  • Licence terms are not clearly stated in the research
  • It is a diagramming tool rather than a full document editor.
Downloadable app Downloadable app
Closed source Open source
License not stated License: GPL-3.0
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 October 2, 2026

Checked September 22, 2026

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