head to head · open source
Sentry vs opentelemetry-js
Sentry has 45,704 GitHub stars, 4,959 forks, 2,265 open issues and last shipped yesterday. opentelemetry-js has 3,515 stars, 1,193 forks, 235 open issues and last shipped 2 days ago. Sentry leads on adoption by 1,200% (45,704 vs 3,515 stars). Sentry is written in Python under a custom or non-standard licence; opentelemetry-js is written in TypeScript under Apache-2.0. Sentry has attracted 11% as many forks as stars, opentelemetry-js 34%. Sentry was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (monitoring), 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 | opentelemetry-js | |
|---|---|---|
| GitHub stars | ★ 46K | ★ 3.5K |
| License | Custom / other | Apache-2.0 |
| Written in | Python | TypeScript |
| Last push | 2026-11-04 | 2026-11-03 |
| Forks | ⑂ 5.0K | ⑂ 1.2K |
| 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 opentelemetry-js if
- You want the opentelemetry-js feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches TypeScript
- You evaluated both and opentelemetry-js 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 opentelemetry-js
Getting Started • API and SDK Reference Contributing • Examples About this project This is the JavaScript version of OpenTelemetry, a framework for collecting traces, metrics, and logs from applications. Quick Start Much of OpenTelemetry JS documentation is written assuming the compiled application is run as CommonJS. For more details on ECMAScript Modules vs CommonJS, refer to esm support. The following describes how to set up tracing for a basic web application. For more detailed documentation, see the website at . Installation Dependencies with the latest tag on NPM should be compatible with each…
read the full opentelemetry-js overview →
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Frequently asked questions
Is Sentry or opentelemetry-js more popular?
Sentry has 45,704 GitHub stars and opentelemetry-js has 3,515. Sentry has the larger community by that measure.
Are Sentry and opentelemetry-js free?
Both are open source. Sentry has no licence declared in this registry, and opentelemetry-js is licensed under Apache-2.0. Both are free to self-host.
What is the difference between Sentry and opentelemetry-js?
Sentry is written in Python and opentelemetry-js in TypeScript. 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 opentelemetry-js?
Choose Sentry if you want the larger community (45,704 stars) or its Custom / other licence terms. Choose opentelemetry-js if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.