head to head · open source
Sentry vs hertzbeat
Sentry has 44,806 GitHub stars, 4,857 forks, 2,265 open issues and last shipped today. hertzbeat has 7,398 stars, 1,330 forks, 313 open issues and last shipped 2 days ago. Sentry leads on adoption by 506% (44,806 vs 7,398 stars). Sentry is written in Python under a custom or non-standard licence; hertzbeat is written in Java under Apache-2.0. Sentry has attracted 11% as many forks as stars, hertzbeat 18%. Sentry was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (monitor, monitoring), 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
| Sentry | hertzbeat | |
|---|---|---|
| GitHub stars | ★ 45K | ★ 7.4K |
| License | Custom / other | Apache-2.0 |
| Written in | Python | Java |
| Last push | 2026-09-20 | 2026-09-18 |
| Forks | ⑂ 4.9K | ⑂ 1.3K |
| 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 hertzbeat if
- You want the hertzbeat feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Java
- You evaluated both and hertzbeat 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 hertzbeat
Apache HertzBeat is an AI powered, next generation open source real time observability system written in Java under the Apache 2.0 licence, built for teams that need unified metrics and logs collection, centralized alerting distribution, and intelligent management and analysis without deploying an agent on every monitored host.
read the full hertzbeat overview →
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Frequently asked questions
Is Sentry or hertzbeat more popular?
Sentry has 44,806 GitHub stars and hertzbeat has 7,398. Sentry has the larger community by that measure.
Are Sentry and hertzbeat free?
Both are open source. Sentry has no licence declared in this registry, and hertzbeat is licensed under Apache-2.0. Both are free to self-host.
What is the difference between Sentry and hertzbeat?
Sentry is written in Python and hertzbeat in Java. 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 hertzbeat?
Choose Sentry if you want the larger community (44,806 stars) or its Custom / other licence terms. Choose hertzbeat if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.