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KTimeTracker vs Hamster: catalog facts
KTimeTracker	Hamster
Free Free and open source under GPL-2.0.	Free Free and open source under the GPL-3.0 licence.
Windows, Linux	Linux
Reports logged time by task and day Supports nested subtasks within projects	Local time tracking with no account Packaged in Debian, Ubuntu and openSUSE
Available for Linux and Windows	Linux and GNOME only Fedora packages are outdated
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License: GPL-3.0
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 8, 2026	Official website Full listing and sources Checked October 2, 2026

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