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Timewarrior vs Watson: catalog facts
Timewarrior	Watson
Free Free and open source software.	Free Free and open source under the MIT licence.
Command line	macOS, Linux, Command line
Time tracking without leaving the terminal Free and open source	Projects and tags with filtered reports Quick start and stop commands
Command line only, no graphical interface Takes some learning of its command syntax	Command line only Requires Python
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: MIT
No account needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked October 2, 2026

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