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Getting Things GNOME! vs sleek: catalog facts
Getting Things GNOME!	sleek
Free Free and open source under the GPL-3.0.	Free Free and open source.
Linux	Windows, macOS, Linux
Native GNOME desktop application Open source under the GPL-3.0	Tasks kept in plain todo.txt files you own Runs on Linux, Windows and macOS
Linux only Little current documentation in one place since the GNOME wiki was retired	Limited to what the todo.txt format can express
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License not stated
Not stated if an account is needed	Not stated if an account is 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.