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todotxt.net vs 0x54ask: catalog facts
todotxt.net	0x54ask
Free Free and open source, with optional donations.	Free Free and open source under the GPL-3.0-or-later licence.
Windows	Android
Single-key shortcuts for almost every action Tasks stay in a plain text file you control	Uses the plain-text todo.txt format No Internet permission at all
Windows only No built-in sync; file syncing must be handled separately	Very new project, created in 2026 No built-in sync; relies on a separate tool such as Syncthing
Downloadable app	Downloadable app
Open source	Open source
License: BSD-2-Clause-FreeBSD	License: GPL-3.0-or-later
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.