head to head · open source
Uptime Kuma vs effect
Uptime Kuma has 93,190 GitHub stars, 8,655 forks, 805 open issues and last shipped yesterday. effect has 17,464 stars, 892 forks, 253 open issues and last shipped yesterday. Uptime Kuma leads on adoption by 434% (93,190 vs 17,464 stars). Uptime Kuma is written in JavaScript under MIT; effect is written in TypeScript under MIT. Uptime Kuma has attracted 9% as many forks as stars, effect 5%. effect 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 | effect | |
|---|---|---|
| GitHub stars | ★ 93K | ★ 17K |
| License | MIT | MIT |
| Written in | JavaScript | TypeScript |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 8.7K | ⑂ 892 |
| 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 effect if
- You want the effect feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and effect 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 effect
Effect Effect is a library for building robust, maintainable, type safe, and production grade applications in TypeScript. It helps you handle the hard problems at scale: typed errors, dependency injection, structured concurrency, scheduling, tracing, and unified schema validation. Effect V4 is currently a release candidate. The main branch contains v4 development. Install V4 RC Requirements TypeScript 5.9 or newer. TypeScript 7 is recommended for the best performance and compatibility with Effect's TypeScript tooling. Node.js 18 or newer is the general minimum for running Effect on Node.js. Some integration…
read the full effect overview →
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Frequently asked questions
Is Uptime Kuma or effect more popular?
Uptime Kuma has 93,190 GitHub stars and effect has 17,464. Uptime Kuma has the larger community by that measure.
Are Uptime Kuma and effect free?
Both are open source. Uptime Kuma is licensed under MIT and effect under MIT. Neither carries a licence fee.
What is the difference between Uptime Kuma and effect?
Uptime Kuma is written in JavaScript and effect 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 effect?
Choose Uptime Kuma if you want the larger community (93,190 stars) or its MIT licence terms. Choose effect if its feature set, stack or MIT licence fits better. Both are self-hostable.