head to head · open source
Sentry vs nezha
Sentry has 44,806 GitHub stars, 4,857 forks, 2,265 open issues and last shipped today. nezha has 10,325 stars, 1,612 forks, 54 open issues and last shipped yesterday. Sentry leads on adoption by 334% (44,806 vs 10,325 stars). Sentry is written in Python under a custom or non-standard licence; nezha is written in Go under Apache-2.0. Sentry has attracted 11% as many forks as stars, nezha 16%. Sentry was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (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 | nezha | |
|---|---|---|
| GitHub stars | ★ 45K | ★ 10K |
| License | Custom / other | Apache-2.0 |
| Written in | Python | Go |
| Last push | 2026-09-20 | 2026-09-19 |
| Forks | ⑂ 4.9K | ⑂ 1.6K |
| 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 nezha if
- You want the nezha feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Go
- You evaluated both and nezha 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 nezha
Nezha is a self hosted, lightweight server and website monitoring and O&M tool written in Go, for operators and small teams who want to watch their own machines and sites without sending that data to someone else's dashboard.
read the full nezha overview →
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Frequently asked questions
Is Sentry or nezha more popular?
Sentry has 44,806 GitHub stars and nezha has 10,325. Sentry has the larger community by that measure.
Are Sentry and nezha free?
Both are open source. Sentry has no licence declared in this registry, and nezha is licensed under Apache-2.0. Both are free to self-host.
What is the difference between Sentry and nezha?
Sentry is written in Python and nezha in Go. 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 nezha?
Choose Sentry if you want the larger community (44,806 stars) or its Custom / other licence terms. Choose nezha if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.