head to head · open source
NetData vs OpenReplay
NetData has 80,561 GitHub stars, 6,630 forks, 393 open issues and last shipped yesterday. OpenReplay has 12,880 stars, 844 forks, 180 open issues and last shipped yesterday. NetData leads on adoption by 525% (80,561 vs 12,880 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 | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 6.6K | ⑂ 844 |
| 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
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 OpenReplay
OpenReplay is open source session replay suite. It lives in JavaScript web app monitoring and observability ecosystem. It supports session replay, cobrowsing, product analytics. TypeScript project. GitHub category is Infrastructure & Operations / Monitoring & Observability. Topics include analytics, angular, devtools, feature flags, ios, javascript, nextjs, product analytics, react, react native, real user monitoring, session replay.
read the full OpenReplay overview →
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Frequently asked questions
Is NetData or OpenReplay more popular?
NetData has 80,561 GitHub stars and OpenReplay has 12,880. 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 (80,561 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.