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Scapple vs Project Graph: catalog facts
Scapple	Project Graph
Paid One-time purchase, with a free trial available.	Free Free download; the project accepts sponsorship.
Windows, macOS	Windows
Notes can go anywhere with no forced central topic Connections made by dragging one note onto another	Many node types including LaTeX, images and SVG Keyboard-driven tree building with automatic layout
Paid after the trial No Linux or mobile versions mentioned	Website and documentation are mainly in Chinese Licence terms are not clearly stated in the research
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
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 2, 2026

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