head to head · open source
Sentry vs OpenObserve
Sentry has 45,697 GitHub stars, 4,959 forks, 2,265 open issues and last shipped yesterday. OpenObserve has 22,699 stars, 1,174 forks, 598 open issues and last shipped yesterday. Sentry leads on adoption by 101% (45,697 vs 22,699 stars). Sentry is written in Python under a custom or non-standard licence; OpenObserve is written in TypeScript under AGPL-3.0. Sentry has attracted 11% as many forks as stars, OpenObserve 5%. Sentry was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (apm), 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 | OpenObserve | |
|---|---|---|
| GitHub stars | ★ 46K | ★ 23K |
| License | Custom / other | AGPL-3.0 |
| Written in | Python | TypeScript |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 5.0K | ⑂ 1.2K |
| 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 OpenObserve if
- You want the OpenObserve feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches TypeScript
- You evaluated both and OpenObserve 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 OpenObserve
Open source Datadog alternative for logs, metrics, traces, and frontend monitoring. Modern observability platform: 10x easier, 140x lower storage cost, high performance, petabyte scale. Cloud · Documentation · Slack · Quickstart OpenObserve (O2) is a cloud native observability platform for logs, metrics, traces, analytics, Real User Monitoring (RUM), and AI/LLM observability. It's a cost effective alternative to Datadog, Splunk, and Elasticsearch for teams that need full observability without the complexity or cost — with Parquet columnar storage and an S3 native design that cuts storage costs by up to 140x…
read the full OpenObserve overview →
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Frequently asked questions
Is Sentry or OpenObserve more popular?
Sentry has 45,697 GitHub stars and OpenObserve has 22,699. Sentry has the larger community by that measure.
Are Sentry and OpenObserve free?
Both are open source. Sentry has no licence declared in this registry, and OpenObserve is licensed under AGPL-3.0. Both are free to self-host.
What is the difference between Sentry and OpenObserve?
Sentry is written in Python and OpenObserve in TypeScript. 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 OpenObserve?
Choose Sentry if you want the larger community (45,697 stars) or its Custom / other licence terms. Choose OpenObserve if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.