head to head · open source
Uptime Kuma vs sysstat
Uptime Kuma has 93,190 GitHub stars, 8,655 forks, 805 open issues and last shipped yesterday. sysstat has 3,384 stars, 492 forks, 75 open issues and last shipped yesterday. Uptime Kuma leads on adoption by 2,654% (93,190 vs 3,384 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.
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Side by side
| Uptime Kuma | sysstat | |
|---|---|---|
| GitHub stars | ★ 93K | ★ 3.4K |
| License | MIT | GPL-2.0 |
| Written in | JavaScript | C |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 8.7K | ⑂ 492 |
| 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 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 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 sysstat
sysstat System performance tools for the Linux operating system (C) 1999 2026 Sebastien GODARD (sysstat (at) orange (dot) fr) Introduction The sysstat package contains various utilities, common to many commercial Unixes, to monitor system performance and usage activity: iostat reports CPU statistics and input/output statistics for block devices and partitions. mpstat reports individual or combined processor related statistics. pidstat reports statistics for Linux tasks (processes) : I/O, CPU, memory, etc. tapestat reports statistics for tape drives connected to the system. cifsiostat reports CIFS statistics…
read the full sysstat overview →
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Frequently asked questions
Is Uptime Kuma or sysstat more popular?
Uptime Kuma has 93,190 GitHub stars and sysstat has 3,384. 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 (93,190 stars) or its MIT licence terms. Choose sysstat if its feature set, stack or GPL-2.0 licence fits better. Both are self-hostable.