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Kapow Punch Clock vs Watson: catalog facts
Kapow Punch Clock	Watson
Free Free and open source under the GPL version 3.	Free Free and open source under the MIT licence.
Windows, Linux	macOS, Linux, Command line
One-button clock in and clock out Editable sessions after the fact	Projects and tags with filtered reports Quick start and stop commands
No macOS build listed Basic reporting compared with full time-tracking services	Command line only Requires Python
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: MIT
Not stated if an account is needed	No account needed
Not stated if it 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.