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jtx BoardOpenTodoList
Free

Free and open source under the GPL-3.0 licence; donations accepted.

 Free

Free and open source under the GPL-3.0 licence.

Android Windows, macOS, Linux, Android, iOS
  • Journals, notes and tasks in one app, linkable to each other
  • Standard iCalendar format avoids lock-in
  • Local-first with plain file-based storage
  • Sync via Nextcloud, ownCloud, WebDAV or Dropbox
  • Sync requires the separate DAVx5 or kSync app
  • Android only
  • No hosted sync service of its own
  • Simpler than dedicated task managers for complex projects
Downloadable app Downloadable app
Open source Open source
License: GPL-3.0-only License: GPL-3.0-or-later
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked October 2, 2026

Checked October 1, 2026

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