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CmapTools vs Scapple: catalog facts
CmapTools	Scapple
Free Free to download, with the project funded partly by donations.	Paid One-time purchase, with a free trial available.
Windows, macOS, Linux, iOS	Windows, macOS
Purpose-built for concept maps with labelled links Desktop versions for Windows, macOS and Linux plus iPad	Notes can go anywhere with no forced central topic Connections made by dragging one note onto another
Narrow focus on concept maps rather than general diagrams Closed source	Paid after the trial No Linux or mobile versions mentioned
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	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

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