head to head · open source
Uptime Kuma vs Plakar
Uptime Kuma has 91,477 GitHub stars, 8,426 forks, 805 open issues and last shipped yesterday. Plakar has 2,062 stars, 92 forks, 123 open issues and last shipped 4 days ago. Uptime Kuma leads on adoption by 4,336% (91,477 vs 2,062 stars). Uptime Kuma is written in JavaScript under MIT; Plakar is written in Go under ISC. Uptime Kuma has attracted 9% as many forks as stars, Plakar 4%. 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 | Plakar | |
|---|---|---|
| GitHub stars | ★ 91K | ★ 2.1K |
| License | MIT | ISC |
| Written in | JavaScript | Go |
| Last push | 2026-09-17 | 2026-09-14 |
| Forks | ⑂ 8.4K | ⑂ 92 |
| 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 Plakar if
- You want the Plakar feature set and don't need the biggest community
- You prefer the ISC license terms
- Your stack matches Go
- You evaluated both and Plakar 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 Plakar
Plakar is an open source backup engine written in Go for the infrastructure and operations ecosystem. It is powered by Kloset, an immutable data store, and it uses the ptar format for self contained archives. Plakar creates snapshots of data, stores them in encrypted and deduplicated repositories, and lets users inspect, verify, and restore the snapshots later.
read the full Plakar overview →
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Frequently asked questions
Is Uptime Kuma or Plakar more popular?
Uptime Kuma has 91,477 GitHub stars and Plakar has 2,062. Uptime Kuma has the larger community by that measure.
Are Uptime Kuma and Plakar free?
Both are open source. Uptime Kuma is licensed under MIT and Plakar under ISC. Neither carries a licence fee.
What is the difference between Uptime Kuma and Plakar?
Uptime Kuma is written in JavaScript and Plakar 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 Plakar?
Choose Uptime Kuma if you want the larger community (91,477 stars) or its MIT licence terms. Choose Plakar if its feature set, stack or ISC licence fits better. Both are self-hostable.