head to head · open source
Sentry vs xray-checker
Sentry has 44,806 GitHub stars, 4,857 forks, 2,265 open issues and last shipped today. xray-checker has 907 stars, 88 forks, 20 open issues and last shipped 10 days ago. Sentry leads on adoption by 4,840% (44,806 vs 907 stars). Sentry is written in Python under a custom or non-standard licence; xray-checker is written in Go under AGPL-3.0. Sentry has attracted 11% as many forks as stars, xray-checker 10%. 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 | xray-checker | |
|---|---|---|
| GitHub stars | ★ 45K | ★ 907 |
| License | Custom / other | AGPL-3.0 |
| Written in | Python | Go |
| Last push | 2026-09-20 | 2026-09-10 |
| Forks | ⑂ 4.9K | ⑂ 88 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Sentry if
- You weight community size — 45K 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 xray-checker if
- You want the xray-checker feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches Go
- You evaluated both and xray-checker fits your workflow better
About Sentry
Sentry is an open source debugging platform for detecting, tracing, and fixing software issues in real time. It lives in the developer infrastructure ecosystem and provides error tracking and performance monitoring across languages, frameworks, and runtime environments.
read the full Sentry overview →
About xray-checker
Xray Checker is an AGPL 3.0 licensed tool written in Go that tests real connections through Xray Core to monitor proxy server availability across the VLESS, VMess, Trojan and Shadowsocks protocols, then exposes the results as Prometheus metrics and REST API endpoints for operators of self hosted proxy and VPN services.
read the full xray-checker overview →
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Frequently asked questions
Is Sentry or xray-checker more popular?
Sentry has 44,806 GitHub stars and xray-checker has 907. Sentry has the larger community by that measure.
Are Sentry and xray-checker free?
Both are open source. Sentry has no licence declared in this registry, and xray-checker is licensed under AGPL-3.0. Both are free to self-host.
What is the difference between Sentry and xray-checker?
Sentry is written in Python and xray-checker 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 xray-checker?
Choose Sentry if you want the larger community (44,806 stars) or its Custom / other licence terms. Choose xray-checker if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.