head to head · open source
Uptime Kuma vs OpenObserve
Uptime Kuma has 93,190 GitHub stars, 8,655 forks, 805 open issues and last shipped yesterday. OpenObserve has 22,699 stars, 1,174 forks, 598 open issues and last shipped yesterday. Uptime Kuma leads on adoption by 311% (93,190 vs 22,699 stars). Uptime Kuma is written in JavaScript under MIT; OpenObserve is written in TypeScript under AGPL-3.0. Uptime Kuma has attracted 9% as many forks as stars, OpenObserve 5%. OpenObserve 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.
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Side by side
| Uptime Kuma | OpenObserve | |
|---|---|---|
| GitHub stars | ★ 93K | ★ 23K |
| License | MIT | AGPL-3.0 |
| Written in | JavaScript | TypeScript |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 8.7K | ⑂ 1.2K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Uptime Kuma if
- You weight community size — 93K stars and counting
- You want the MIT license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick OpenObserve if
- You want the OpenObserve feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches TypeScript
- You evaluated both and OpenObserve fits your workflow better
About Uptime Kuma
Uptime Kuma Uptime Kuma is an easy to use self hosted monitoring tool. 🥔 Live Demo Try it! Demo Server (Location: Frankfurt Germany): It is a temporary live demo, all data will be deleted after 10 minutes. Sponsored by Uptime Kuma Sponsors. ⭐ Features Monitoring uptime for HTTP(s) / TCP / HTTP(s) Keyword / HTTP(s) Json Query / Websocket / Ping / DNS Record / Push / Steam Game Server / Docker Containers Fancy, Reactive, Fast UI/UX Notifications via Telegram, Discord, Gotify, Slack, Pushover, Email (SMTP), and 90+ notification services, click here for the full list 20 second intervals Multi Languages Multiple…
read the full Uptime Kuma overview →
About OpenObserve
Open source Datadog alternative for logs, metrics, traces, and frontend monitoring. Modern observability platform: 10x easier, 140x lower storage cost, high performance, petabyte scale. Cloud · Documentation · Slack · Quickstart OpenObserve (O2) is a cloud native observability platform for logs, metrics, traces, analytics, Real User Monitoring (RUM), and AI/LLM observability. It's a cost effective alternative to Datadog, Splunk, and Elasticsearch for teams that need full observability without the complexity or cost — with Parquet columnar storage and an S3 native design that cuts storage costs by up to 140x…
read the full OpenObserve overview →
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Frequently asked questions
Is Uptime Kuma or OpenObserve more popular?
Uptime Kuma has 93,190 GitHub stars and OpenObserve has 22,699. Uptime Kuma has the larger community by that measure.
Are Uptime Kuma and OpenObserve free?
Both are open source. Uptime Kuma is licensed under MIT and OpenObserve under AGPL-3.0. Neither carries a licence fee.
What is the difference between Uptime Kuma and OpenObserve?
Uptime Kuma is written in JavaScript and OpenObserve 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 OpenObserve?
Choose Uptime Kuma if you want the larger community (93,190 stars) or its MIT licence terms. Choose OpenObserve if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.