head to head · open source
Uptime Kuma vs OpenReplay
Uptime Kuma has 91,477 GitHub stars, 8,426 forks, 805 open issues and last shipped yesterday. OpenReplay has 12,880 stars, 844 forks, 180 open issues and last shipped yesterday. Uptime Kuma leads on adoption by 610% (91,477 vs 12,880 stars). Uptime Kuma is written in JavaScript under MIT; OpenReplay is written in TypeScript under a custom or non-standard licence. Uptime Kuma has attracted 9% as many forks as stars, OpenReplay 7%. Uptime Kuma 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
| Uptime Kuma | OpenReplay | |
|---|---|---|
| GitHub stars | ★ 91K | ★ 13K |
| License | MIT | Custom / other |
| Written in | JavaScript | TypeScript |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 8.4K | ⑂ 844 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Uptime Kuma if
- You weight community size — 91K stars and counting
- You want the MIT license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick OpenReplay if
- You want the OpenReplay feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches TypeScript
- You evaluated both and OpenReplay fits your workflow better
About Uptime Kuma
Uptime Kuma is a free, MIT licensed, self hosted monitoring tool with a reactive web dashboard, built for operators and teams that want to watch their own HTTP, TCP, and DNS endpoints and keep the resulting data on their own infrastructure.
read the full Uptime Kuma overview →
About OpenReplay
OpenReplay is open source session replay suite. It lives in JavaScript web app monitoring and observability ecosystem. It supports session replay, cobrowsing, product analytics. TypeScript project. GitHub category is Infrastructure & Operations / Monitoring & Observability. Topics include analytics, angular, devtools, feature flags, ios, javascript, nextjs, product analytics, react, react native, real user monitoring, session replay.
read the full OpenReplay 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 Uptime Kuma or OpenReplay more popular?
Uptime Kuma has 91,477 GitHub stars and OpenReplay has 12,880. Uptime Kuma has the larger community by that measure.
Are Uptime Kuma and OpenReplay free?
Both are open source. Uptime Kuma is licensed under MIT, and OpenReplay has no licence declared in this registry. Both are free to self-host.
What is the difference between Uptime Kuma and OpenReplay?
Uptime Kuma is written in JavaScript and OpenReplay 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, Uptime Kuma or OpenReplay?
Choose Uptime Kuma if you want the larger community (91,477 stars) or its MIT licence terms. Choose OpenReplay if its feature set, stack or Custom / other licence fits better. Both are self-hostable.