head to head · open source
PostHog vs offen
PostHog has 40,600 GitHub stars, 3,579 forks, 5,637 open issues and last shipped yesterday. offen has 982 stars, 54 forks, 18 open issues and last shipped 8 months ago. PostHog leads on adoption by 4,034% (40,600 vs 982 stars). PostHog is written in Python under a custom or non-standard licence; offen is written in JavaScript under Apache-2.0. PostHog has attracted 9% as many forks as stars, offen 5%. PostHog was the more recently maintained of the two, and both are self-hostable with no licence fee.
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 | offen | |
|---|---|---|
| GitHub stars | ★ 41K | ★ 982 |
| License | Custom / other | Apache-2.0 |
| Written in | Python | JavaScript |
| Last push | 2026-11-02 | 2026-03-04 |
| Forks | ⑂ 3.6K | ⑂ 54 |
| 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 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 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 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 PostHog or offen more popular?
PostHog has 40,600 GitHub stars and offen has 982. PostHog has the larger community by that measure.
Are PostHog and offen free?
Both are open source. PostHog has no licence declared in this registry, and offen is licensed under Apache-2.0. Both are free to self-host.
What is the difference between PostHog and offen?
PostHog is written in Python 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, PostHog or offen?
Choose PostHog if you want the larger community (40,600 stars) or its Custom / other licence terms. Choose offen if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.