head to head · open source
NetData vs sitespeed.io
NetData has 80,564 GitHub stars, 6,630 forks, 393 open issues and last shipped today. sitespeed.io has 5,028 stars, 625 forks, 159 open issues and last shipped 2 days ago. NetData leads on adoption by 1,502% (80,564 vs 5,028 stars). NetData is written in Go under GPL-3.0; sitespeed.io is written in JavaScript under MIT. NetData has attracted 8% as many forks as stars, sitespeed.io 12%. NetData 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
| NetData | sitespeed.io | |
|---|---|---|
| GitHub stars | ★ 81K | ★ 5.0K |
| License | GPL-3.0 | MIT |
| Written in | Go | JavaScript |
| Last push | 2026-09-18 | 2026-09-16 |
| Forks | ⑂ 6.6K | ⑂ 625 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick NetData if
- You weight community size — 81K stars and counting
- You want the GPL-3.0 license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick sitespeed.io if
- You want the sitespeed.io feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches JavaScript
- You evaluated both and sitespeed.io fits your workflow better
About NetData
Netdata is an open source, real time infrastructure monitoring platform written in Go and released under GPL 3.0, built for operators and lean teams who need per second visibility across Linux, macOS, FreeBSD, and Windows systems.
read the full NetData overview →
About sitespeed.io
sitespeed.io is a free, MIT licensed open source web performance tool that drives real browsers to test, monitor, and optimize website speed, and it is aimed at developers, performance engineers, and operations teams that want their own measurement data without signing up for a hosted service.
read the full sitespeed.io overview →
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Frequently asked questions
Is NetData or sitespeed.io more popular?
NetData has 80,564 GitHub stars and sitespeed.io has 5,028. NetData has the larger community by that measure.
Are NetData and sitespeed.io free?
Both are open source. NetData is licensed under GPL-3.0 and sitespeed.io under MIT. Neither carries a licence fee.
What is the difference between NetData and sitespeed.io?
NetData is written in Go and sitespeed.io in JavaScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, NetData or sitespeed.io?
Choose NetData if you want the larger community (80,564 stars) or its GPL-3.0 licence terms. Choose sitespeed.io if its feature set, stack or MIT licence fits better. Both are self-hostable.