head to head · open source
Sentry vs flogger
Sentry has 45,704 GitHub stars, 4,959 forks, 2,265 open issues and last shipped yesterday. flogger has 1,481 stars, 133 forks, 53 open issues and last shipped 3 days ago. Sentry leads on adoption by 2,986% (45,704 vs 1,481 stars). Sentry is written in Python under a custom or non-standard licence; flogger is written in Java under Apache-2.0. Sentry has attracted 11% as many forks as stars, flogger 9%. Sentry was the more recently maintained of the two, and both are self-hostable with no licence fee.
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 | flogger | |
|---|---|---|
| GitHub stars | ★ 46K | ★ 1.5K |
| License | Custom / other | Apache-2.0 |
| Written in | Python | Java |
| Last push | 2026-11-04 | 2026-11-02 |
| Forks | ⑂ 5.0K | ⑂ 133 |
| 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 flogger if
- You want the flogger 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 flogger 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 flogger
Flogger: A Fluent Logging API for Java What is it? Flogger is a fluent logging API for Java. It supports a wide variety of features, and has [many benefits] over existing logging APIs. Come for more self documenting log statements: Stay for additional features that help you manage your logging better: Benefits While some users prefer "fluency" as a style, this is not what the argument for Flogger rests on. Flogger offers these key, concrete advantages over other logging APIs: Logging at disabled levels is [effectively free]. Finally, you can add as many fine grained log statements to your code as you want…
read the full flogger overview →
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Frequently asked questions
Is Sentry or flogger more popular?
Sentry has 45,704 GitHub stars and flogger has 1,481. Sentry has the larger community by that measure.
Are Sentry and flogger free?
Both are open source. Sentry has no licence declared in this registry, and flogger is licensed under Apache-2.0. Both are free to self-host.
What is the difference between Sentry and flogger?
Sentry is written in Python and flogger 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 flogger?
Choose Sentry if you want the larger community (45,704 stars) or its Custom / other licence terms. Choose flogger if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.