head to head · open source
Sentry vs mulog
Sentry has 44,806 GitHub stars, 4,857 forks, 2,265 open issues and last shipped today. mulog has 540 stars, 49 forks, 12 open issues and last shipped 3 months ago. Sentry leads on adoption by 8,197% (44,806 vs 540 stars). Sentry is written in Python under a custom or non-standard licence; mulog is written in Clojure under Apache-2.0. Sentry has attracted 11% as many forks as stars, mulog 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 | mulog | |
|---|---|---|
| GitHub stars | ★ 45K | ★ 540 |
| License | Custom / other | Apache-2.0 |
| Written in | Python | Clojure |
| Last push | 2026-09-20 | 2026-06-27 |
| Forks | ⑂ 4.9K | ⑂ 49 |
| 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 mulog if
- You want the mulog feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Clojure
- You evaluated both and mulog 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 mulog
μ/log is an Apache 2.0 Clojure micro logging library that logs events and data points rather than formatted words, aimed at Clojure developers building distributed systems who want logs, metrics and traces to come out of one event stream.
read the full mulog overview →
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Frequently asked questions
Is Sentry or mulog more popular?
Sentry has 44,806 GitHub stars and mulog has 540. Sentry has the larger community by that measure.
Are Sentry and mulog free?
Both are open source. Sentry has no licence declared in this registry, and mulog is licensed under Apache-2.0. Both are free to self-host.
What is the difference between Sentry and mulog?
Sentry is written in Python and mulog in Clojure. 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 mulog?
Choose Sentry if you want the larger community (44,806 stars) or its Custom / other licence terms. Choose mulog if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.