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Project Graph vs TheBrain: catalog facts
Project Graph	TheBrain
Free Free download; the project accepts sponsorship.	Free The desktop app is free according to the developer's site.
Windows	Windows, macOS, Linux
Many node types including LaTeX, images and SVG Keyboard-driven tree building with automatic layout	Ideas can link to many contexts without duplication Long-developed product with a large user base
Website and documentation are mainly in Chinese Licence terms are not clearly stated in the research	Network-style interface takes time to learn Not open source
Downloadable app	Downloadable app
Closed 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	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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