head to head · open source
NetData vs OpenReplay
NetData has 81,255 GitHub stars, 6,717 forks, 393 open issues and last shipped yesterday. OpenReplay has 13,090 stars, 879 forks, 180 open issues and last shipped yesterday. NetData leads on adoption by 521% (81,255 vs 13,090 stars). NetData is written in Go under GPL-3.0; OpenReplay is written in TypeScript under a custom or non-standard licence. NetData has attracted 8% as many forks as stars, OpenReplay 7%. 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 | OpenReplay | |
|---|---|---|
| GitHub stars | ★ 81K | ★ 13K |
| License | GPL-3.0 | Custom / other |
| Written in | Go | TypeScript |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 6.7K | ⑂ 879 |
| 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 OpenReplay if
- You want the OpenReplay feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches TypeScript
- You evaluated both and OpenReplay fits your workflow better
About NetData
X Ray Vision for your infrastructure! Every Metric, Every Second. No BS. Visit our Home Page MENU: WHO WE ARE KEY FEATURES GETTING STARTED HOW IT WORKS FAQ DOCS COMMUNITY CONTRIBUTE LICENSE [!WARNING] People get addicted to Netdata. Once you use it on your systems, there's no going back. WHO WE ARE Netdata is an open source, real time infrastructure monitoring platform. Monitor, detect, and act across your entire infrastructure. Core Advantages: Instant Insights – With Netdata you can access per second metrics and visualizations. Zero Configuration – You can deploy immediately without complex setup. ML Powered –…
read the full NetData overview →
About OpenReplay
Français Español Русский العربية Session replay for developers The most advanced session replay for building delightful web apps. OpenReplay is an open source session replay suite you can host yourself, that lets you see what users do on your web app, helping you troubleshoot issues faster. Session replay. OpenReplay replays what users do, but not only. It also shows you what went under the hood, how your website or app behaves by capturing network activity, console logs, JS errors, store actions/state, page speed metrics, cpu/memory usage and much more. Low footprint . With a 26KB (.br) tracker that…
read the full OpenReplay overview →
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Frequently asked questions
Is NetData or OpenReplay more popular?
NetData has 81,255 GitHub stars and OpenReplay has 13,090. NetData has the larger community by that measure.
Are NetData and OpenReplay free?
Both are open source. NetData is licensed under GPL-3.0, and OpenReplay has no licence declared in this registry. Both are free to self-host.
What is the difference between NetData and OpenReplay?
NetData is written in Go and OpenReplay in TypeScript. 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 OpenReplay?
Choose NetData if you want the larger community (81,255 stars) or its GPL-3.0 licence terms. Choose OpenReplay if its feature set, stack or Custom / other licence fits better. Both are self-hostable.