head to head · open source
Umami vs Fathom Lite
Umami has 38,912 GitHub stars, 8,083 forks, 127 open issues and last shipped yesterday. Fathom Lite has 8,020 stars, 383 forks, 5 open issues and last shipped 6 months ago. Umami leads on adoption by 385% (38,912 vs 8,020 stars). Umami is written in TypeScript under MIT; Fathom Lite is written in Go under MIT. Umami has attracted 21% as many forks as stars, Fathom Lite 5%. Umami was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (analytics, google-analytics), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Umami | Fathom Lite | |
|---|---|---|
| GitHub stars | ★ 39K | ★ 8.0K |
| License | MIT | MIT |
| Written in | TypeScript | Go |
| Last push | 2026-09-19 | 2026-03-18 |
| Forks | ⑂ 8.1K | ⑂ 383 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Umami if
- You weight community size — 39K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick Fathom Lite if
- You want the Fathom Lite feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Go
- You evaluated both and Fathom Lite fits your workflow better
About Umami
Umami is a privacy first, open source web and product analytics platform that gives site owners and product teams traffic, campaign, behavior, conversion and revenue reporting without cookies or surveillance, run either self hosted or in the cloud.
read the full Umami overview →
About Fathom Lite
Fathom Lite is the original open source, self hosted edition of Fathom Analytics — a simple, privacy focused website analytics tool written in Go with a Preact dashboard, released under the MIT licence for people who want to run their own analytics server rather than buy a hosted service.
read the full Fathom Lite overview →
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Frequently asked questions
Is Umami or Fathom Lite more popular?
Umami has 38,912 GitHub stars and Fathom Lite has 8,020. Umami has the larger community by that measure.
Are Umami and Fathom Lite free?
Both are open source. Umami is licensed under MIT and Fathom Lite under MIT. Neither carries a licence fee.
What is the difference between Umami and Fathom Lite?
Umami is written in TypeScript and Fathom Lite in Go. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Umami or Fathom Lite?
Choose Umami if you want the larger community (38,912 stars) or its MIT licence terms. Choose Fathom Lite if its feature set, stack or MIT licence fits better. Both are self-hostable.