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GTimeLog vs Watson: catalog facts
GTimeLog	Watson
Free Free and open source under the GPL-2.0 licence.	Free Free and open source under the MIT licence.
Linux	macOS, Linux, Command line
Quick text entries with no project setup needed Plain text log files with a documented format	Projects and tags with filtered reports Quick start and stop commands
Linux only, built on GTK Documentation is described as work in progress	Command line only Requires Python
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	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.