head to head · open source
Sentry vs semantic_logger
Sentry has 45,707 GitHub stars, 4,965 forks, 2,265 open issues and last shipped yesterday. semantic_logger has 957 stars, 140 forks, 0 open issues and last shipped 2 days ago. Sentry leads on adoption by 4,676% (45,707 vs 957 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 | ★ 46K | ★ 957 |
| License | Custom / other | Apache-2.0 |
| Written in | Python | Ruby |
| Last push | 2026-11-04 | 2026-11-03 |
| Forks | ⑂ 5.0K | ⑂ 140 |
| 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 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
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 semantic_logger
Semantic Logger Semantic Logger is a high performance, asynchronous structured logging framework for Ruby and Rails. It differs from ordinary loggers in two important ways: 1. It logs structured data, not just strings. Along with the text message, each log entry can carry a payload (any Hash), an exception, a duration, metrics, and tags. That data is preserved all the way to the destination, so it stays searchable instead of being flattened into text. 2. It logs asynchronously. Log events are pushed onto an in memory queue and written to their destinations by a separate background thread, so your application is…
read the full semantic_logger overview →
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Frequently asked questions
Is Sentry or semantic_logger more popular?
Sentry has 45,707 GitHub stars and semantic_logger has 957. 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 (45,707 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.