head to head · open source
Sentry vs OneUptime
Sentry has 44,806 GitHub stars, 4,857 forks, 2,265 open issues and last shipped today. OneUptime has 7,631 stars, 458 forks, 292 open issues and last shipped today. Sentry leads on adoption by 487% (44,806 vs 7,631 stars). Sentry is written in Python under a custom or non-standard licence; OneUptime is written in TypeScript under a custom or non-standard licence. Sentry has attracted 11% as many forks as stars, OneUptime 6%. OneUptime 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 | OneUptime | |
|---|---|---|
| GitHub stars | ★ 45K | ★ 7.6K |
| License | Custom / other | Custom / other |
| Written in | Python | TypeScript |
| Last push | 2026-09-20 | 2026-09-20 |
| Forks | ⑂ 4.9K | ⑂ 458 |
| 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 OneUptime if
- You want the OneUptime feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches TypeScript
- You evaluated both and OneUptime 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 OneUptime
OneUptime is an open source, self hostable monitoring and observability platform written in TypeScript and released under the Apache 2.0 licence, built for DevOps, SRE, and on call teams that want uptime checks, incident response, status pages, logs, traces, metrics, and APM in one application instead of a shelf of separate SaaS subscriptions.
read the full OneUptime overview →
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Frequently asked questions
Is Sentry or OneUptime more popular?
Sentry has 44,806 GitHub stars and OneUptime has 7,631. Sentry has the larger community by that measure.
Are Sentry and OneUptime free?
Neither Sentry nor OneUptime declares a licence in this registry, so check each project's own repository before relying on either for a commercial use. Both are free to self-host.
What is the difference between Sentry and OneUptime?
Sentry is written in Python and OneUptime 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 OneUptime?
Choose Sentry if you want the larger community (44,806 stars) or its Custom / other licence terms. Choose OneUptime if its feature set, stack or Custom / other licence fits better. Both are self-hostable.