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todotxt.net vs sleek: catalog facts
todotxt.net	sleek
Free Free and open source, with optional donations.	Free Free and open source.
Windows	Windows, macOS, Linux
Single-key shortcuts for almost every action Tasks stay in a plain text file you control	Tasks kept in plain todo.txt files you own Runs on Linux, Windows and macOS
Windows only No built-in sync; file syncing must be handled separately	Limited to what the todo.txt format can express
Downloadable app	Downloadable app
Open source	Open source
License: BSD-2-Clause-FreeBSD	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.