head to head · open source
Sentry vs PostHog
Sentry has 44,798 GitHub stars, 4,854 forks, 2,265 open issues and last shipped today. PostHog has 39,842 stars, 3,397 forks, 5,637 open issues and last shipped today. Sentry leads on adoption by 12% (44,798 vs 39,842 stars). Sentry is written in Python under a custom or non-standard licence; PostHog is written in Python under a custom or non-standard licence. Sentry has attracted 11% as many forks as stars, PostHog 9%. 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
| Sentry | PostHog | |
|---|---|---|
| GitHub stars | ★ 45K | ★ 40K |
| License | Custom / other | Custom / other |
| Written in | Python | Python |
| Last push | 2026-09-18 | 2026-09-18 |
| Forks | ⑂ 4.9K | ⑂ 3.4K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Sentry if
- You weight community size — 45K 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 PostHog if
- You want the PostHog feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches Python
- You evaluated both and PostHog fits your workflow better
About Sentry
Sentry is an open source debugging platform for detecting, tracing, and fixing software issues in real time. It lives in the developer infrastructure ecosystem and provides error tracking and performance monitoring across languages, frameworks, and runtime environments.
read the full Sentry overview →
About PostHog
PostHog is an open source platform for building self driving products, combining product analytics, web analytics, session replay, feature flags, experiments, error tracking, logs, surveys, a data warehouse, data pipelines, AI observability, and workflows in a single system, aimed at product, engineering, and growth teams that want to own their product data rather than rent it.
read the full PostHog overview →
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Frequently asked questions
Is Sentry or PostHog more popular?
Sentry has 44,798 GitHub stars and PostHog has 39,842. Sentry has the larger community by that measure.
Are Sentry and PostHog free?
Neither Sentry nor PostHog declares a licence in this registry, so check each project's own repository before relying on either for a commercial use. Both are free to self-host.
What is the difference between Sentry and PostHog?
Sentry is written in Python and PostHog in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Sentry or PostHog?
Choose Sentry if you want the larger community (44,798 stars) or its Custom / other licence terms. Choose PostHog if its feature set, stack or Custom / other licence fits better. Both are self-hostable.