head to head · open source
Umami vs offen
Umami has 38,885 GitHub stars, 8,053 forks, 127 open issues and last shipped yesterday. offen has 981 stars, 54 forks, 18 open issues and last shipped 7 months ago. Umami leads on adoption by 3,864% (38,885 vs 981 stars). Umami is written in TypeScript under MIT; offen is written in JavaScript under Apache-2.0. Umami has attracted 21% as many forks as stars, offen 6%. Umami was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (web-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 | offen | |
|---|---|---|
| GitHub stars | ★ 39K | ★ 981 |
| License | MIT | Apache-2.0 |
| Written in | TypeScript | JavaScript |
| Last push | 2026-09-17 | 2026-03-04 |
| Forks | ⑂ 8.1K | ⑂ 54 |
| 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 offen if
- You want the offen feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches JavaScript
- You evaluated both and offen 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 offen
Offen Fair Web Analytics is a free, open source, self hosted web analytics application for website operators and teams who want privacy compliant usage statistics with end to end encrypted data, and for the visitors who can review or delete their own data.
read the full offen overview →
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Frequently asked questions
Is Umami or offen more popular?
Umami has 38,885 GitHub stars and offen has 981. Umami has the larger community by that measure.
Are Umami and offen free?
Both are open source. Umami is licensed under MIT and offen under Apache-2.0. Neither carries a licence fee.
What is the difference between Umami and offen?
Umami is written in TypeScript and offen in JavaScript. 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 offen?
Choose Umami if you want the larger community (38,885 stars) or its MIT licence terms. Choose offen if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.