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Kapow Punch Clock vs Timewarrior: catalog facts
Kapow Punch Clock	Timewarrior
Free Free and open source under the GPL version 3.	Free Free and open source software.
Windows, Linux	Command line
One-button clock in and clock out Editable sessions after the fact	Time tracking without leaving the terminal Free and open source
No macOS build listed Basic reporting compared with full time-tracking services	Command line only, no graphical interface Takes some learning of its command syntax
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 24, 2026

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