head to head · open source
Sentry vs semantic_logger
Sentry has 44,806 GitHub stars, 4,857 forks, 2,265 open issues and last shipped today. semantic_logger has 956 stars, 139 forks, 0 open issues and last shipped 14 days ago. Sentry leads on adoption by 4,587% (44,806 vs 956 stars). Sentry is written in Python under a custom or non-standard licence; semantic_logger is written in Ruby under Apache-2.0. Sentry has attracted 11% as many forks as stars, semantic_logger 15%. 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 | semantic_logger | |
|---|---|---|
| GitHub stars | ★ 45K | ★ 956 |
| License | Custom / other | Apache-2.0 |
| Written in | Python | Ruby |
| Last push | 2026-09-20 | 2026-09-06 |
| Forks | ⑂ 4.9K | ⑂ 139 |
| 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 semantic_logger if
- You want the semantic_logger feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Ruby
- You evaluated both and semantic_logger 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 semantic_logger
Semantic Logger is a high performance, asynchronous structured logging framework for Ruby and Rails that pushes log events onto an in memory queue and writes them to one or more destinations from a separate background thread.
read the full semantic_logger overview →
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Frequently asked questions
Is Sentry or semantic_logger more popular?
Sentry has 44,806 GitHub stars and semantic_logger has 956. Sentry has the larger community by that measure.
Are Sentry and semantic_logger free?
Both are open source. Sentry has no licence declared in this registry, and semantic_logger is licensed under Apache-2.0. Both are free to self-host.
What is the difference between Sentry and semantic_logger?
Sentry is written in Python and semantic_logger in Ruby. 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 semantic_logger?
Choose Sentry if you want the larger community (44,806 stars) or its Custom / other licence terms. Choose semantic_logger if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.