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SimpleMindHeimer
Freemium

Free edition available; Pro is a one-time purchase per platform with no subscription.

 Free

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

Windows, macOS, Android, iOS Windows, Linux
  • One-time purchase, no subscription
  • Free-form and automatic layouts
  • Supports automatic layouts and image exports.
  • Pro must be bought separately for each platform
  • Images, styling and notes need the Pro edition
  • 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 September 24, 2026

Checked September 22, 2026

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