head to head · open source
PostHog vs Vemetric
PostHog has 40,600 GitHub stars, 3,579 forks, 5,637 open issues and last shipped yesterday. Vemetric has 396 stars, 36 forks, 8 open issues and last shipped 2 days ago. PostHog leads on adoption by 10,153% (40,600 vs 396 stars). PostHog is written in Python under a custom or non-standard licence; Vemetric is written in TypeScript under AGPL-3.0. PostHog has attracted 9% as many forks as stars, Vemetric 9%. 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 | Vemetric | |
|---|---|---|
| GitHub stars | ★ 41K | ★ 396 |
| License | Custom / other | AGPL-3.0 |
| Written in | Python | TypeScript |
| Last push | 2026-11-02 | 2026-11-01 |
| Forks | ⑂ 3.6K | ⑂ 36 |
| 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 Vemetric if
- You want the Vemetric 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 Vemetric 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 Vemetric
Vemetric Simple, yet powerful Web & Product Analytics. Website · Documentation About Vemetric is an open source web and product analytics platform that helps you understand your users' behavior. It's designed to be simple yet powerful, providing insights into how users interact with your website or product. Features Real time analytics Behavior tracking via User Journeys Custom event tracking Powerful filtering mechanisms to see how your users interact with your Product & Website Tracking across several subdomains Contributing We love your input! Doesn't matter if you want to report a bug, fix an issue, or even…
read the full Vemetric overview →
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Frequently asked questions
Is PostHog or Vemetric more popular?
PostHog has 40,600 GitHub stars and Vemetric has 396. PostHog has the larger community by that measure.
Are PostHog and Vemetric free?
Both are open source. PostHog has no licence declared in this registry, and Vemetric is licensed under AGPL-3.0. Both are free to self-host.
What is the difference between PostHog and Vemetric?
PostHog is written in Python and Vemetric 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 Vemetric?
Choose PostHog if you want the larger community (40,600 stars) or its Custom / other licence terms. Choose Vemetric if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.