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

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