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Timetrap vs Watson: catalog facts
Timetrap	Watson
Free Free and open source.	Free Free and open source under the MIT licence.
macOS, Linux, Command line	macOS, Linux, Command line
Short abbreviated commands for fast check in and out Multiple named timesheets	Projects and tags with filtered reports Quick start and stop commands
Requires a Ruby installation Updates are infrequent	Command line only Requires Python
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: MIT
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.