Time Tracking
Open-source time tracking apps
6 of the 43 time tracking apps in this directory are open source, according to their own sites.
All of them are free or have a free plan.
Listings checked up to Oct 6, 2026 · Where the facts come from
| Tool | Price | Free plan | Runs on |
|---|---|---|---|
| ActivityWatchFree, open-source automatic time tracker that keeps data local | Free | Free | macOS, Windows, Linux, Android, Browser extension |
| KimaiOpen-source time tracking with invoicing, self-hosted or cloud | Free plan · from €2.99/mo | Yes | Web |
| solidtimeOpen-source time tracker for freelancers and teams | Free plan · from €8/mo | Yes | Web, macOS, Windows, Linux, Browser extension |
| TimeTaggerOpen-source time tracker built on tags and a timeline | Free plan · from €3/mo | Yes | Web |
| TimeScribeFree, open-source local time tracker for macOS and Windows | Free | Free | macOS, Windows |
| Simple Time TrackerFree, open-source activity time tracker for Android | Free | Free | Android |
Common questions
Which time tracking apps are open source?
6 of the 43 time tracking apps in this directory are open source, according to their own sites. They are ActivityWatch, Kimai, solidtime, TimeTagger, TimeScribe and Simple Time Tracker.
When was this checked?
Each listing shows its own date. On this page they run from Oct 5, 2026 to Oct 6, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.
This page is built from the listings. A tool is here because its listing says so, and each listing names the pages it was read from.