Compare software

Reminduck vs Errands: catalog facts
Reminduck	Errands
Free Free and open source under the GPL-3.0-or-later licence.	Free Free and open source under the MIT license.
Linux	Linux
Simple, single-purpose reminder app Playful design with a quacking duck	Sync with Nextcloud and other CalDAV servers Sub-tasks and multiple task lists
Linux only Basic feature set compared with full task managers	Linux only Deliberately simple, with few project-management features
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: MIT
No account needed	No account needed
Not stated if it works offline	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.