head to head · open source
Umami vs offen
Umami has 39,874 GitHub stars, 8,471 forks, 127 open issues and last shipped 2 days ago. offen has 982 stars, 54 forks, 18 open issues and last shipped 8 months ago. Umami leads on adoption by 3,960% (39,874 vs 982 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 5%. 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 | ★ 40K | ★ 982 |
| License | MIT | Apache-2.0 |
| Written in | TypeScript | JavaScript |
| Last push | 2026-11-01 | 2026-03-04 |
| Forks | ⑂ 8.5K | ⑂ 54 |
| 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 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 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 offen
Offen Fair Web Analytics Let your users access their data. Gain valuable insights at the same time. Open, lightweight, self hosted and free. Contents Software Core features How it works Essential metrics Objectives Localize Customize Test drive License Community Feedback and contributions welcome Kind support Who's using Offen Fair Web Analytics? Links Core features Secure & free Our code is open source. All usage data is encrypted end to end. Offen Fair Web Analytics will always be available for free. Self hosted Comply with GDPR guidelines. No ads, no third parties involved. Offen Fair Web Analytics uses first…
read the full offen overview →
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Frequently asked questions
Is Umami or offen more popular?
Umami has 39,874 GitHub stars and offen has 982. 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 (39,874 stars) or its MIT licence terms. Choose offen if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.