TimeTagger vs Watson
A side-by-side comparison of two self-hosted time tracking options — licensing, setup difficulty, resource needs, and what each one replaces.
TimeTagger
Tag-based time tracker with an interactive timeline
VS
Watson
Command-line time tracker with projects, tags, and reports
| Feature | TimeTagger | Watson |
|---|---|---|
| Deploy effort | Under-an-hour setup | Read-the-docs project |
| Health score | 71 · Good | 43 · Fair |
| Category | Time Tracking | Time Tracking |
| License | GPL-3.0 | MIT |
| Language | Python | Python |
| Setup difficulty | Easy | Easy |
| Min. RAM | 128 MB | 64 MB |
| Deployment | docker, source | binary, source |
| GitHub stars | ★ 1,789 | ★ 2,538 |
| First released | 2021 | 2015 |
| Replaces | Toggl, Harvest | Toggl, Harvest |
What are TimeTagger and Watson?
TimeTagger
TimeTagger is an open-source time tracking app with an interactive timeline interface. Records are organized with hashtags, making reporting fast and flexible.
- Interactive timeline view
- Hashtag-based organization
- Live reporting
- Works offline as a PWA
Watson
Watson is a command-line time tracker written in Python. It records time frames per project with tags, stores data in local files, and generates reports and aggregates for billing or analysis. Maintained under the Jazzband organization.
- Command-line time tracking
- Project and tag support
- Detailed reports and aggregates
- Cross-platform
TimeTagger vs Watson: key differences
Both projects are written in Python. Licensing differs — GPL-3.0 for TimeTagger versus MIT for Watson. Watson is the lighter option, starting around 64 MB of RAM against 128 MB for TimeTagger. Watson is the more established project (first released 2015), while TimeTagger arrived in 2021. TimeTagger lists first-class Docker deployment; Watson does not.
Why pick each one
Choose TimeTagger if…
- Released under the GPL-3.0 license
- Easy to set up — beginner-friendly
- First-class Docker support for quick deployment
- Active community (1.8k GitHub stars)
Choose Watson if…
- Released under the MIT license
- Easy to set up — beginner-friendly
- Active community (2.5k GitHub stars)
- Written in Python
Frequently asked questions
Is TimeTagger or Watson better?
Neither is universally better. Watson has the larger community; both share a easy setup difficulty, so the decision comes down to features and licensing.
Are TimeTagger and Watson free and open-source?
Yes. TimeTagger is licensed under GPL-3.0 and Watson under MIT. Both can be self-hosted at no software cost.
Can I run TimeTagger and Watson with Docker?
TimeTagger: yes. Watson: check the project docs for container support.
Which is lighter on resources, TimeTagger or Watson?
Watson has the smaller minimum footprint at 64 MB of RAM, compared to about 128 MB for TimeTagger. Real-world usage depends on library size, user count, and enabled features.