head to head · open source
PostHog vs Umami
PostHog has 40,584 GitHub stars, 3,576 forks, 5,637 open issues and last shipped yesterday. Umami has 39,855 stars, 8,469 forks, 127 open issues and last shipped 2 days ago. PostHog leads on adoption by 2% (40,584 vs 39,855 stars). PostHog is written in Python under a custom or non-standard licence; Umami is written in TypeScript under MIT. PostHog has attracted 9% as many forks as stars, Umami 21%. PostHog was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (analytics, product-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
| PostHog | Umami | |
|---|---|---|
| GitHub stars | ★ 41K | ★ 40K |
| License | Custom / other | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-11-02 | 2026-11-01 |
| Forks | ⑂ 3.6K | ⑂ 8.5K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick PostHog if
- You weight community size — 41K stars and counting
- You want the Custom / other license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick Umami if
- You want the Umami feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and Umami fits your workflow better
About PostHog
Docs Community Roadmap Why PostHog? Changelog Bug reports PostHog is the open source platform for building self driving products PostHog provides every tool you need to build a successful product, and captures all the context agents need to proactively diagnose problems, uncover opportunities, and ship fixes: Self driving mode: Turn signals in your product data (errors, rage clicks, failed queries, and more) into researched reports and pull requests you review and merge. Product analytics: Autocapture or manually instrument event based analytics to understand user behavior and analyze data with visualization or…
read the full PostHog overview →
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 →
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Frequently asked questions
Is PostHog or Umami more popular?
PostHog has 40,584 GitHub stars and Umami has 39,855. PostHog has the larger community by that measure.
Are PostHog and Umami free?
Both are open source. PostHog has no licence declared in this registry, and Umami is licensed under MIT. Both are free to self-host.
What is the difference between PostHog and Umami?
PostHog is written in Python and Umami in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, PostHog or Umami?
Choose PostHog if you want the larger community (40,584 stars) or its Custom / other licence terms. Choose Umami if its feature set, stack or MIT licence fits better. Both are self-hostable.