head to head · open source
Sentry vs metrics
Sentry has 44,792 GitHub stars, 4,854 forks, 2,265 open issues and last shipped yesterday. metrics has 17,202 stars, 2,275 forks, 68 open issues and last shipped 4 months ago. Sentry leads on adoption by 160% (44,792 vs 17,202 stars). Sentry is written in Python under a custom or non-standard licence; metrics is written in JavaScript under MIT. Sentry has attracted 11% as many forks as stars, metrics 13%. Sentry was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
← all 8884 open source comparisons
Side by side
| Sentry | metrics | |
|---|---|---|
| GitHub stars | ★ 45K | ★ 17K |
| License | Custom / other | MIT |
| Written in | Python | JavaScript |
| Last push | 2026-09-17 | 2026-05-29 |
| Forks | ⑂ 4.9K | ⑂ 2.3K |
| 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 metrics if
- You want the metrics feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches JavaScript
- You evaluated both and metrics 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 metrics
Metrics is an infographics generator for GitHub accounts, published under the MIT license and written in JavaScript. It lives in the GitHub ecosystem as a GitHub Action and as a hosted web service, and it produces statistics about a user, an organization, or a repository. The output is rendered as SVG, Markdown, PDF, or JSON, which means the same generated figures can be embedded in a profile readme, attached to a blog post, or consumed by another tool.
read the full metrics overview →
More in Infrastructure & Operations
Related comparisons
More Monitoring & Observability projects
Compare either of these against the rest of the Monitoring & Observability field.
Frequently asked questions
Is Sentry or metrics more popular?
Sentry has 44,792 GitHub stars and metrics has 17,202. Sentry has the larger community by that measure.
Are Sentry and metrics free?
Both are open source. Sentry has no licence declared in this registry, and metrics is licensed under MIT. Both are free to self-host.
What is the difference between Sentry and metrics?
Sentry is written in Python and metrics in JavaScript. 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 metrics?
Choose Sentry if you want the larger community (44,792 stars) or its Custom / other licence terms. Choose metrics if its feature set, stack or MIT licence fits better. Both are self-hostable.