head to head · open source
Sentry vs Gatus
Sentry has 44,806 GitHub stars, 4,857 forks, 2,265 open issues and last shipped today. Gatus has 12,114 stars, 827 forks, 382 open issues and last shipped 12 days ago. Sentry leads on adoption by 270% (44,806 vs 12,114 stars). Sentry is written in Python under a custom or non-standard licence; Gatus is written in Go under Apache-2.0. Sentry has attracted 11% as many forks as stars, Gatus 7%. Sentry was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 3 topic tags (devops, 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 | Gatus | |
|---|---|---|
| GitHub stars | ★ 45K | ★ 12K |
| License | Custom / other | Apache-2.0 |
| Written in | Python | Go |
| Last push | 2026-09-20 | 2026-09-08 |
| Forks | ⑂ 4.9K | ⑂ 827 |
| 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 Gatus if
- You want the Gatus 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 Gatus 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 Gatus
Gatus is an open source health dashboard and status page for monitoring services in real time. It is written in Go, licensed under Apache 2.0, and appears in the Infrastructure & Operations / Monitoring & Observability category. The project presents a developer oriented interface for checking whether services are reachable and behaving as expected.
read the full Gatus overview →
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Frequently asked questions
Is Sentry or Gatus more popular?
Sentry has 44,806 GitHub stars and Gatus has 12,114. Sentry has the larger community by that measure.
Are Sentry and Gatus free?
Both are open source. Sentry has no licence declared in this registry, and Gatus is licensed under Apache-2.0. Both are free to self-host.
What is the difference between Sentry and Gatus?
Sentry is written in Python and Gatus 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 Gatus?
Choose Sentry if you want the larger community (44,806 stars) or its Custom / other licence terms. Choose Gatus if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.