head to head · open source
Uptime Kuma vs calico
Uptime Kuma has 91,477 GitHub stars, 8,426 forks, 805 open issues and last shipped yesterday. calico has 7,358 stars, 1,606 forks, 279 open issues and last shipped yesterday. Uptime Kuma leads on adoption by 1,143% (91,477 vs 7,358 stars). Uptime Kuma is written in JavaScript under MIT; calico is written in Go under Apache-2.0. Uptime Kuma has attracted 9% as many forks as stars, calico 22%. 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.
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Side by side
| Uptime Kuma | calico | |
|---|---|---|
| GitHub stars | ★ 91K | ★ 7.4K |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | Go |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 8.4K | ⑂ 1.6K |
| 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 calico if
- You want the calico feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Go
- You evaluated both and calico 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 calico
Calico is an open source, Apache 2.0 licensed cloud native networking and network security project for Kubernetes clusters, maintained by Tigera and aimed at platform engineers, cluster operators and network teams who need container networking, network policy enforcement and encryption across on premises, cloud and bare metal environments.
read the full calico overview →
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Frequently asked questions
Is Uptime Kuma or calico more popular?
Uptime Kuma has 91,477 GitHub stars and calico has 7,358. Uptime Kuma has the larger community by that measure.
Are Uptime Kuma and calico free?
Both are open source. Uptime Kuma is licensed under MIT and calico under Apache-2.0. Neither carries a licence fee.
What is the difference between Uptime Kuma and calico?
Uptime Kuma is written in JavaScript and calico in Go. 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 calico?
Choose Uptime Kuma if you want the larger community (91,477 stars) or its MIT licence terms. Choose calico if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.