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Reminders vs Microsoft To Do: catalog facts
Reminders	Microsoft To Do
Free Free and open source under the GPL-3.0-or-later licence.	Free Free to use from Microsoft.
Linux	Windows, macOS, Android, iOS, Web
Recurring reminders and scheduled notifications Lists, search, sorting and filtering	Free with no paid tier needed for the app itself Works with Outlook tasks and Microsoft Planner
Linux only Small project with a modest feature set	Closed source and tied to Microsoft's services Most useful for people already in the Microsoft 365 ecosystem
Downloadable app	Downloadable app, Web application
Open source	Closed source
License: GPL-3.0-or-later	License not stated
No account 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 October 1, 2026	Official website Full listing and sources Checked September 23, 2026

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