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0x54ask vs sleek: catalog facts
0x54ask	sleek
Free Free and open source under the GPL-3.0-or-later licence.	Free Free and open source.
Android	Windows, macOS, Linux
Uses the plain-text todo.txt format No Internet permission at all	Tasks kept in plain todo.txt files you own Runs on Linux, Windows and macOS
Very new project, created in 2026 No built-in sync; relies on a separate tool such as Syncthing	Limited to what the todo.txt format can express
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License not stated
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

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