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Heimer vs Xmind: catalog facts
Heimer	Xmind
Free The open-source software is available without a license fee. Hosting, hardware and…	Freemium Free to start without a credit card, with paid plans for more features.
Windows, Linux	Web
Supports automatic layouts and image exports.	Available on web, desktop and mobile Several map structures and templates
It is a diagramming tool rather than a full document editor.	Some features are in paid plans AI features depend on the online service
Downloadable app	Downloadable app, Web application
Open source	Closed source
License: GPL-3.0	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 September 22, 2026	Official website Full listing and sources Checked September 23, 2026

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