head to head · open source
Sentry vs witr
Sentry has 45,697 GitHub stars, 4,959 forks, 2,265 open issues and last shipped yesterday. witr has 22,906 stars, 808 forks, 17 open issues and last shipped 11 days ago. Sentry leads on adoption by 99% (45,697 vs 22,906 stars). Sentry is written in Python under a custom or non-standard licence; witr is written in Go under Apache-2.0. Sentry has attracted 11% as many forks as stars, witr 4%. Sentry was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (devops, 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 | witr | |
|---|---|---|
| GitHub stars | ★ 46K | ★ 23K |
| License | Custom / other | Apache-2.0 |
| Written in | Python | Go |
| Last push | 2026-11-02 | 2026-10-23 |
| Forks | ⑂ 5.0K | ⑂ 808 |
| 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 witr if
- You want the witr feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Go
- You evaluated both and witr 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 witr
witr Why is this running? Trace any process, port, container, or file back to the exact chain that started it — one command, machine readable JSON, or an interactive TUI. 🎮 Try witr in your browser → Investigate a simulated Linux box — a guided tutorial and free play sandbox, no install required. Purpose • Installation • TUI • Flags • Core Concept • Examples Output Behavior • Platforms • Success Criteria • Sponsors 1. Purpose witr exists to answer a single question: Why is this running? When something is running on a system, whether it is a process, a service, or something bound to a port, there is always a…
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Frequently asked questions
Is Sentry or witr more popular?
Sentry has 45,697 GitHub stars and witr has 22,906. Sentry has the larger community by that measure.
Are Sentry and witr free?
Both are open source. Sentry has no licence declared in this registry, and witr is licensed under Apache-2.0. Both are free to self-host.
What is the difference between Sentry and witr?
Sentry is written in Python and witr in Go. 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 witr?
Choose Sentry if you want the larger community (45,697 stars) or its Custom / other licence terms. Choose witr if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.