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Timewarrior vs arbtt: catalog facts
Timewarrior	arbtt
Free Free and open source software.	Free Free and open source under the GPL-2.0 licence.
Command line	macOS, Linux, Command line
Time tracking without leaving the terminal Free and open source	Fully automatic capture with no manual input Rules applied at query time so old data can be re-analysed
Command line only, no graphical interface Takes some learning of its command syntax	Requires writing a rules file to get useful statistics Command-line only, no graphical reports
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-2.0
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.