head to head · open source
PostHog vs Aptabase
PostHog has 40,600 GitHub stars, 3,579 forks, 5,637 open issues and last shipped yesterday. Aptabase has 1,864 stars, 141 forks, 59 open issues and last shipped 4 days ago. PostHog leads on adoption by 2,078% (40,600 vs 1,864 stars). PostHog is written in Python under a custom or non-standard licence; Aptabase is written in C# under AGPL-3.0. PostHog has attracted 9% as many forks as stars, Aptabase 8%. PostHog was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (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 | Aptabase | |
|---|---|---|
| GitHub stars | ★ 41K | ★ 1.9K |
| License | Custom / other | AGPL-3.0 |
| Written in | Python | C# |
| Last push | 2026-11-02 | 2026-10-30 |
| Forks | ⑂ 3.6K | ⑂ 141 |
| 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 Aptabase if
- You want the Aptabase feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches C#
- You evaluated both and Aptabase 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 Aptabase
Aptabase Analytics for Apps. Open Source. Privacy First. Simple. Learn more » About the Project Aptabase is an open source alternative to Firebase/Google Analytics, specifically built for Mobile, Desktop and Web apps. 📱 Extensive list of SDK : No matter what framework or language you use, we have an SDK for you. Swift, React Native, Flutter, Electron, Kotlin, and many others. 😇 Privacy First : We prioritize user privacy and collect minimal usage data without using unique identifiers. Instead, we focus on monitoring sessions, complying fully with GDPR, CCPA, and PECR regulations. 🚀 Simple : Built in and user…
read the full Aptabase overview →
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Frequently asked questions
Is PostHog or Aptabase more popular?
PostHog has 40,600 GitHub stars and Aptabase has 1,864. PostHog has the larger community by that measure.
Are PostHog and Aptabase free?
Both are open source. PostHog has no licence declared in this registry, and Aptabase is licensed under AGPL-3.0. Both are free to self-host.
What is the difference between PostHog and Aptabase?
PostHog is written in Python and Aptabase in C#. 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 Aptabase?
Choose PostHog if you want the larger community (40,600 stars) or its Custom / other licence terms. Choose Aptabase if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.