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topydo vs sleek: catalog facts
topydo	sleek
Free Free and open source under the GPL-3.0 licence.	Free Free and open source.
Command line	Windows, macOS, Linux
Plain todo.txt file readable by other tools Due dates, dependencies and recurring tasks	Tasks kept in plain todo.txt files you own Runs on Linux, Windows and macOS
Terminal only, no graphical or mobile app Extended tags may not be understood by other todo.txt tools	Limited to what the todo.txt format can express
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	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.