head to head · open source
Sentry vs transmittable-thread-local
Sentry has 45,704 GitHub stars, 4,959 forks, 2,265 open issues and last shipped yesterday. transmittable-thread-local has 8,305 stars, 1,721 forks, 57 open issues and last shipped 5 months ago. Sentry leads on adoption by 450% (45,704 vs 8,305 stars). Sentry is written in Python under a custom or non-standard licence; transmittable-thread-local is written in Java under Apache-2.0. Sentry has attracted 11% as many forks as stars, transmittable-thread-local 21%. Sentry was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (apm), 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 | transmittable-thread-local | |
|---|---|---|
| GitHub stars | ★ 46K | ★ 8.3K |
| License | Custom / other | Apache-2.0 |
| Written in | Python | Java |
| Last push | 2026-11-04 | 2026-06-18 |
| Forks | ⑂ 5.0K | ⑂ 1.7K |
| 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 transmittable-thread-local if
- You want the transmittable-thread-local 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 transmittable-thread-local 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 transmittable-thread-local
[!IMPORTANT] 🚧 这个分支是 TransmittableThreadLocal(TTL) v3 ，在开发中还没有发布。 v3 的版本说明、工作项列表及其进展，参见 issue 432。 👉 目前使用中的稳定发布版本 v2.x 在 分支 2.x 上。 📖 English Documentation 📖 中文文档 🔧 功能 🎨 需求场景 👥 User Guide 1. 简单使用 2. 保证线程池中传递值 2.1 修饰 Runnable 和 Callable 整个过程的完整时序图 2.2 修饰线程池 2.3 使用 Java Agent 来修饰 JDK 线程池实现类 Java Agent 的启动参数配置 🔌 Java API Docs 🍪 Maven依赖 🔨 关于编译构建 ❓ FAQ ✨ 使用 TTL 的好处与必要性 🗿 更多文档 📚 相关资料 JDK Core Classes 💗 Who Used 👷 Contributors 🔧 功能 👉 TransmittableThreadLocal ( TTL )：在使用线程池等会池化复用线程的执行组件情况下，提供 ThreadLocal 值的传递功能，解决异步执行时上下文传递的问题。一个 Java 标准库本应为框架/中间件设施开发提供的标配能力，本库功能聚焦 & 0依赖，支持 Java 6 21 。 JDK 的…
read the full transmittable-thread-local overview →
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Frequently asked questions
Is Sentry or transmittable-thread-local more popular?
Sentry has 45,704 GitHub stars and transmittable-thread-local has 8,305. Sentry has the larger community by that measure.
Are Sentry and transmittable-thread-local free?
Both are open source. Sentry has no licence declared in this registry, and transmittable-thread-local is licensed under Apache-2.0. Both are free to self-host.
What is the difference between Sentry and transmittable-thread-local?
Sentry is written in Python and transmittable-thread-local 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 transmittable-thread-local?
Choose Sentry if you want the larger community (45,704 stars) or its Custom / other licence terms. Choose transmittable-thread-local if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.