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OpenTodoList vs HamsterBase Tasks: catalog facts
OpenTodoList	HamsterBase Tasks
Free Free and open source under the GPL-3.0 licence.	Freemium Free tier with unlimited tasks; Pro costs $20 per year.
Windows, macOS, Linux, Android, iOS	Windows, macOS, Linux, Android, iOS, Web, Self-hosted
Local-first with plain file-based storage Sync via Nextcloud, ownCloud, WebDAV or Dropbox	Apps for every major desktop and mobile platform End-to-end encrypted sync
No hosted sync service of its own Simpler than dedicated task managers for complex projects	Some features require the paid Pro plan Smaller community than mainstream task apps
Downloadable app	Downloadable app, Web application, Self-hosted, Hosted service
Open source	Open source
License: GPL-3.0-or-later	License: AGPL-3.0
No account needed	Not stated if an account is needed
Works offline	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.