head to head · open source
Uptime Kuma vs sysstat
Uptime Kuma has 91,498 GitHub stars, 8,431 forks, 805 open issues and last shipped yesterday. sysstat has 3,367 stars, 489 forks, 75 open issues and last shipped 7 days ago. Uptime Kuma leads on adoption by 2,617% (91,498 vs 3,367 stars). Uptime Kuma is written in JavaScript under MIT; sysstat is written in C under GPL-2.0. Uptime Kuma has attracted 9% as many forks as stars, sysstat 15%. Uptime Kuma was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (monitoring), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
← all 13541 open source comparisons
Side by side
| Uptime Kuma | sysstat | |
|---|---|---|
| GitHub stars | ★ 91K | ★ 3.4K |
| License | MIT | GPL-2.0 |
| Written in | JavaScript | C |
| Last push | 2026-09-18 | 2026-09-12 |
| Forks | ⑂ 8.4K | ⑂ 489 |
| 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 sysstat if
- You want the sysstat feature set and don't need the biggest community
- You prefer the GPL-2.0 license terms
- Your stack matches C
- You evaluated both and sysstat 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 sysstat
sysstat is a GPL 2.0 licensed collection of C utilities that report and historize Linux system performance data, built for system administrators, SREs, and performance engineers who need per device, per CPU, and per process measurements on hosts they control.
read the full sysstat overview →
More in Infrastructure & Operations
Related comparisons
More Monitoring & Observability projects
Compare either of these against the rest of the Monitoring & Observability field.
Frequently asked questions
Is Uptime Kuma or sysstat more popular?
Uptime Kuma has 91,498 GitHub stars and sysstat has 3,367. Uptime Kuma has the larger community by that measure.
Are Uptime Kuma and sysstat free?
Both are open source. Uptime Kuma is licensed under MIT and sysstat under GPL-2.0. Neither carries a licence fee.
What is the difference between Uptime Kuma and sysstat?
Uptime Kuma is written in JavaScript and sysstat in C. 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 sysstat?
Choose Uptime Kuma if you want the larger community (91,498 stars) or its MIT licence terms. Choose sysstat if its feature set, stack or GPL-2.0 licence fits better. Both are self-hostable.