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topydo vs todotxt.net: catalog facts
topydo	todotxt.net
Free Free and open source under the GPL-3.0 licence.	Free Free and open source, with optional donations.
Command line	Windows
Plain todo.txt file readable by other tools Due dates, dependencies and recurring tasks	Single-key shortcuts for almost every action Tasks stay in a plain text file you control
Terminal only, no graphical or mobile app Extended tags may not be understood by other todo.txt tools	Windows only No built-in sync; file syncing must be handled separately
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: BSD-2-Clause-FreeBSD
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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