head to head · open source
Sentry vs Zabbix
Sentry has 45,704 GitHub stars, 4,959 forks, 2,265 open issues and last shipped yesterday. Zabbix has 6,533 stars, 1,277 forks, 108 open issues and last shipped 2 days ago. Sentry leads on adoption by 600% (45,704 vs 6,533 stars). Sentry is written in Python under a custom or non-standard licence; Zabbix is written in Go Template under AGPL-3.0. Sentry has attracted 11% as many forks as stars, Zabbix 20%. 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 | Zabbix | |
|---|---|---|
| GitHub stars | ★ 46K | ★ 6.5K |
| License | Custom / other | AGPL-3.0 |
| Written in | Python | Go Template |
| Last push | 2026-11-04 | 2026-11-03 |
| Forks | ⑂ 5.0K | ⑂ 1.3K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Sentry if
- You weight community size — 46K 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 Zabbix if
- You want the Zabbix feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches Go Template
- You evaluated both and Zabbix fits your workflow better
About Sentry
Users and logs provide clues. Sentry provides answers. What's Sentry? Sentry is the debugging platform that helps every developer detect, trace, and fix issues. Code breaks, fix it faster. Official Sentry SDKs JavaScript Electron React Native Python Ruby PHP Laravel Go Rust Java/Kotlin Objective C/Swift C\ /F\ C/C++ Dart/Flutter Perl Clojure Elixir Unity Unreal Engine Godot Engine PowerShell Resources Documentation Discussions (Bugs, feature requests, general questions) Discord Contributing Bug Tracker Code Transifex (Translate Sentry\!)
read the full Sentry overview →
About Zabbix
An enterprise class, open source distributed monitoring solution that’s designed to monitor the performance and availability of network devices, servers, services, and other IT resources. Zabbix is a flexible solution that can monitor anything from a simple, standalone application to a large scale environment, with features including: Resource discovery: Discover network entities, server resources, and onboard/offboard devices. Use out of the box integrations (templates) to monitor anything form a low level device to a SAAS service. Metric acquisition: Use an agent or agent less approach for metric acquisition…
read the full Zabbix overview →
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Frequently asked questions
Is Sentry or Zabbix more popular?
Sentry has 45,704 GitHub stars and Zabbix has 6,533. Sentry has the larger community by that measure.
Are Sentry and Zabbix free?
Both are open source. Sentry has no licence declared in this registry, and Zabbix is licensed under AGPL-3.0. Both are free to self-host.
What is the difference between Sentry and Zabbix?
Sentry is written in Python and Zabbix in Go Template. 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 Zabbix?
Choose Sentry if you want the larger community (45,704 stars) or its Custom / other licence terms. Choose Zabbix if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.