Compare software

Errands vs Reminduck: catalog facts
Errands	Reminduck
Free Free and open source under the MIT license.	Free Free and open source under the GPL-3.0-or-later licence.
Linux	Linux
Sync with Nextcloud and other CalDAV servers Sub-tasks and multiple task lists	Simple, single-purpose reminder app Playful design with a quacking duck
Linux only Deliberately simple, with few project-management features	Linux only Basic feature set compared with full task managers
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: GPL-3.0-or-later
No account needed	No account needed
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 October 1, 2026

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