head to head · open source
Sentry vs g3log
Sentry has 44,806 GitHub stars, 4,857 forks, 2,265 open issues and last shipped today. g3log has 964 stars, 280 forks, 0 open issues and last shipped 16 days ago. Sentry leads on adoption by 4,548% (44,806 vs 964 stars). Sentry is written in Python under a custom or non-standard licence; g3log is written in C++ under Unlicense. Sentry has attracted 11% as many forks as stars, g3log 29%. Sentry was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (crash-reporting), 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 | g3log | |
|---|---|---|
| GitHub stars | ★ 45K | ★ 964 |
| License | Custom / other | Unlicense |
| Written in | Python | C++ |
| Last push | 2026-09-20 | 2026-09-04 |
| Forks | ⑂ 4.9K | ⑂ 280 |
| 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 g3log if
- You want the g3log feature set and don't need the biggest community
- You prefer the Unlicense license terms
- Your stack matches C++
- You evaluated both and g3log 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 g3log
G3log is an asynchronous, crash safe C++ logging library for OSX, Windows, and several Linux distributions, aimed at C++ developers building critical task systems that must not lose log records when a process dies.
read the full g3log overview →
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Frequently asked questions
Is Sentry or g3log more popular?
Sentry has 44,806 GitHub stars and g3log has 964. Sentry has the larger community by that measure.
Are Sentry and g3log free?
Both are open source. Sentry has no licence declared in this registry, and g3log is licensed under Unlicense. Both are free to self-host.
What is the difference between Sentry and g3log?
Sentry is written in Python and g3log in C++. 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 g3log?
Choose Sentry if you want the larger community (44,806 stars) or its Custom / other licence terms. Choose g3log if its feature set, stack or Unlicense licence fits better. Both are self-hostable.