head to head · open source
Uptime Kuma vs pup
Uptime Kuma has 91,498 GitHub stars, 8,431 forks, 805 open issues and last shipped yesterday. pup has 1,014 stars, 120 forks, 12 open issues and last shipped yesterday. Uptime Kuma leads on adoption by 8,923% (91,498 vs 1,014 stars). Uptime Kuma is written in JavaScript under MIT; pup is written in Rust under Apache-2.0. Uptime Kuma has attracted 9% as many forks as stars, pup 12%. pup 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 | pup | |
|---|---|---|
| GitHub stars | ★ 91K | ★ 1.0K |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | Rust |
| Last push | 2026-09-18 | 2026-09-18 |
| Forks | ⑂ 8.4K | ⑂ 120 |
| 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 pup if
- You want the pup feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Rust
- You evaluated both and pup 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 pup
Pup is an Apache 2.0 licensed, Rust written command line client from Datadog that exposes more than 200 commands across over 33 Datadog product domains, letting AI agents and the humans who supervise them query observability data from a terminal.
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Frequently asked questions
Is Uptime Kuma or pup more popular?
Uptime Kuma has 91,498 GitHub stars and pup has 1,014. Uptime Kuma has the larger community by that measure.
Are Uptime Kuma and pup free?
Both are open source. Uptime Kuma is licensed under MIT and pup under Apache-2.0. Neither carries a licence fee.
What is the difference between Uptime Kuma and pup?
Uptime Kuma is written in JavaScript and pup in Rust. 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 pup?
Choose Uptime Kuma if you want the larger community (91,498 stars) or its MIT licence terms. Choose pup if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.