head to head · open source
Sentry vs Exceptionless
Sentry has 45,707 GitHub stars, 4,965 forks, 2,265 open issues and last shipped yesterday. Exceptionless has 2,456 stars, 506 forks, 66 open issues and last shipped yesterday. Sentry leads on adoption by 1,761% (45,707 vs 2,456 stars). Sentry is written in Python under a custom or non-standard licence; Exceptionless is written in C# under Apache-2.0. Sentry has attracted 11% as many forks as stars, Exceptionless 21%. Sentry was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 3 topic tags (crash-reporting, crash-reports, error-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 | Exceptionless | |
|---|---|---|
| GitHub stars | ★ 46K | ★ 2.5K |
| License | Custom / other | Apache-2.0 |
| Written in | Python | C# |
| Last push | 2026-11-04 | 2026-11-04 |
| Forks | ⑂ 5.0K | ⑂ 506 |
| 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 Exceptionless if
- You want the Exceptionless feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches C#
- You evaluated both and Exceptionless 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 Exceptionless
The definition of the word exceptionless is: to be without exception. Exceptionless provides real time error reporting for your JavaScript, Node, .NET Core, ASP.NET, Web API, WebForms, WPF, Console, and MVC apps. It organizes the gathered information into simple actionable data that will help your app become exceptionless! ⭐️ We appreciate your star, it helps! Using Exceptionless Refer to the Exceptionless documentation. Hosting Options We provide very reasonably priced hosting at Exceptionless. By using our hosted service, you are supporting the project and helping it get better! We also provide set up and…
read the full Exceptionless overview →
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Frequently asked questions
Is Sentry or Exceptionless more popular?
Sentry has 45,707 GitHub stars and Exceptionless has 2,456. Sentry has the larger community by that measure.
Are Sentry and Exceptionless free?
Both are open source. Sentry has no licence declared in this registry, and Exceptionless is licensed under Apache-2.0. Both are free to self-host.
What is the difference between Sentry and Exceptionless?
Sentry is written in Python and Exceptionless in C#. 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 Exceptionless?
Choose Sentry if you want the larger community (45,707 stars) or its Custom / other licence terms. Choose Exceptionless if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.