Open Source WebRTC Media Server Comparison 2025–2026: LiveKit vs Janus vs mediasoup vs Jitsi 

Building a WebRTC application is relatively straightforward when two users need to communicate directly. The architecture becomes much more complex when your application needs to support group video calls, virtual classrooms, webinars, live streaming, recording, screen sharing, or thousands of concurrent participants.

This is where a WebRTC media server becomes important.

Instead of having every participant establish a direct connection with every other participant, a media server can receive and selectively forward audio and video streams. For many multi-party applications, this means using a Selective Forwarding Unit (SFU) architecture.

Among the most widely considered open-source options are LiveKit, Janus, mediasoup, and Jitsi Videobridge. All four can be used to build real-time communication products, but they take very different approaches.

So, which one should you choose in 2025–2026?

The answer depends less on which project is "best" and more on what you are building, how much control you need, what your engineering team already knows, and how much infrastructure you want to manage yourself.

The most important takeaway is that LiveKit, Janus, mediasoup, and Jitsi solve different layers of the WebRTC problem.

If you need a complete real-time platform, LiveKit is an attractive starting point.

If you need a conferencing ecosystem, Jitsi is hard to ignore.

If you want to embed a low-level SFU into your own Node.js architecture, mediasoup offers significant control.

If your application requires a modular WebRTC gateway and specialized media integrations, Janus remains a strong option.

The right choice should ultimately come from your use case, media architecture, engineering capabilities, expected scale, and operational requirements rather than popularity alone.

Frequently Asked Questions

Which is better, LiveKit or mediasoup?

LiveKit is generally better when you want a more complete real-time communication platform and faster development. mediasoup is better when you need lower-level control and want to design more of the application architecture yourself.

Is LiveKit open source?

Yes. LiveKit Server is an open-source WebRTC SFU that can be self-hosted.

Is Janus a WebRTC media server?

Yes. Janus is an open-source, general-purpose WebRTC server designed around a modular plugin architecture.

Is mediasoup a media server?

mediasoup provides the media-server/SFU layer as a Node.js module backed by native media workers. It is intentionally not a complete conferencing application.

Is Jitsi a WebRTC media server?

Jitsi is a broader open-source conferencing ecosystem. Jitsi Videobridge is the SFU/media-server component responsible for forwarding conference media.

Which WebRTC media server is best for video conferencing?

Jitsi is a strong choice when you want an established open-source conferencing ecosystem. LiveKit is another strong option when you want to build a more customized conferencing product.

Conclusion

Choosing between LiveKit, Janus, mediasoup, and Jitsi is ultimately an architecture decision.

The best WebRTC infrastructure is not necessarily the project with the most features. It is the one that gives your engineering team the right balance of control, development speed, scalability, and operational complexity for the product you are building.