head to head · open source
PostHog vs Rybbit
PostHog has 40,600 GitHub stars, 3,579 forks, 5,637 open issues and last shipped yesterday. Rybbit has 13,202 stars, 768 forks, 198 open issues and last shipped yesterday. PostHog leads on adoption by 208% (40,600 vs 13,202 stars). PostHog is written in Python under a custom or non-standard licence; Rybbit is written in TypeScript under AGPL-3.0. PostHog has attracted 9% as many forks as stars, Rybbit 6%. 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 | Rybbit | |
|---|---|---|
| GitHub stars | ★ 41K | ★ 13K |
| License | Custom / other | AGPL-3.0 |
| Written in | Python | TypeScript |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 3.6K | ⑂ 768 |
| 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 Rybbit if
- You want the Rybbit feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches TypeScript
- You evaluated both and Rybbit 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 Rybbit
Open Source Web & Product Analytics Website Demo Documentation Discord License (AGPL 3) Contribute Rybbit is the modern open source and privacy friendly alternative to Google Analytics. It takes only a couple minutes to setup and is super intuitive to use. 🔍 View Live Demo See Rybbit running on a real life production site. 🚀 Getting Started There are two ways to start using Rybbit: 📚 Explore our documentation to learn more about installation, configuration, and usage. ✨ Key Features All key web analytics metrics including sessions, unique users, pageviews, bounce rate, session duration Session replays No…
read the full Rybbit overview →
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Frequently asked questions
Is PostHog or Rybbit more popular?
PostHog has 40,600 GitHub stars and Rybbit has 13,202. PostHog has the larger community by that measure.
Are PostHog and Rybbit free?
Both are open source. PostHog has no licence declared in this registry, and Rybbit is licensed under AGPL-3.0. Both are free to self-host.
What is the difference between PostHog and Rybbit?
PostHog is written in Python and Rybbit 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 Rybbit?
Choose PostHog if you want the larger community (40,600 stars) or its Custom / other licence terms. Choose Rybbit if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.