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Errands vs Reinschrift: catalog facts
Errands	Reinschrift
Free Free and open source under the MIT license.	Free Free and open source under the GPL-3.0-or-later.
Linux	Linux, Web, Self-hosted, Command line
Sync with Nextcloud and other CalDAV servers Sub-tasks and multiple task lists	Tasks live in a plain Markdown file with no database Desktop app, shell extension, CLI and web app share one file
Linux only Deliberately simple, with few project-management features	Desktop app is built for GNOME No native mobile apps mentioned
Downloadable app	Downloadable app, Self-hosted
Open source	Open source
License: MIT	License: GPL-3.0-or-later
No account needed	No account needed
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.