head to head · open source
Umami vs Fathom Lite
Umami has 39,874 GitHub stars, 8,471 forks, 127 open issues and last shipped 2 days ago. Fathom Lite has 8,034 stars, 388 forks, 5 open issues and last shipped 8 months ago. Umami leads on adoption by 396% (39,874 vs 8,034 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 | ★ 40K | ★ 8.0K |
| License | MIT | MIT |
| Written in | TypeScript | Go |
| Last push | 2026-11-01 | 2026-03-18 |
| Forks | ⑂ 8.5K | ⑂ 388 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Umami if
- You weight community size — 40K 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 Umami is a privacy first analytics platform. Traffic, campaigns, behavior, conversions, and revenue in one place — no cookies, no surveillance, self hosted or in the cloud. 🚀 Getting Started A detailed getting started guide can be found at umami.is/docs. 🛠 Installing from Source Requirements A server with Node.js version 18.18+. A PostgreSQL database version v12.14+. Get the source code and install packages Configure Umami Create an .env file with the following: Optional: set API URL to change the base URL used by internal UI API calls. Relative paths are served under BASE PATH ; absolute URLs are…
read the full Umami overview →
About Fathom Lite
Fathom Lite simple website analytics ============================== Fathom Lite is a previous and open source version of Fathom Analytics (a paid, hosted Google Analytics alternative). It was the very first version of our software, and has been downloaded millions of times! While we are no longer adding features to this Lite version, we will be continuing to maintain it long term and fix any bugs that come up. Fathom Lite vs Fathom (hosted) Today’s Fathom Analytics is a hosted product with simple pricing based on monthly pageviews. The same core capabilities are included on every plan: for example API access, up…
read the full Fathom Lite overview →
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Frequently asked questions
Is Umami or Fathom Lite more popular?
Umami has 39,874 GitHub stars and Fathom Lite has 8,034. 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 (39,874 stars) or its MIT licence terms. Choose Fathom Lite if its feature set, stack or MIT licence fits better. Both are self-hostable.