About

Peerix is a compact JavaScript/TypeScript library that removes the friction from building WebRTC peer-to-peer applications. It abstracts signaling, connection lifecycle, and media/data multiplexing so developers can focus on features instead of plumbing.

Core idea

Provide a simple yet powerful abstraction of WebRTC and extend its capabilities with add-ons, all while keeping the API minimal and transport-agnostic.

What it solves

• Signaling boilerplate: pluggable drivers (BroadcastChannel, NATS, WebSockets, or your own) make discovery and messaging straightforward.
• Serverless architecture: no server-side code required, NATS can be used for signaling directly in the browser.
• Room and state management: built-in support for rooms, peer metadata, and labeling of streams and channels.
• Connection complexity: automatic lifecycle and negotiation handling for updating streams and channels.
• Multi-track & data multiplexing: publish multiple streams and open many data channels over the same connection.
• Developer experience: built with TypeScript for better DX and type safety, with zero dependencies to minimize security risks and simplify deployment.

Key features

• Easy-to-use API for peer connections, media streams, and data channels
• Transport-agnostic design that allows you to choose the best signaling method, including custom implementations
• Supports serverless architecture (no server-side code required)
• Room and state management features to simplify building complex applications
• Multiplexing multiple media streams and data channels over a single connection per peer
• Extensible architecture that allows you to build custom features and integrations
• Cross-browser compatibility with support for all modern browsers
• TypeScript support for a better developer experience and type safety
• Well-documented codebase with comprehensive examples and the API reference
• Automatically tested and optimized for performance and reliability
• Zero dependencies to reduce security risks
• Open-source, actively maintained project

Who it’s for

Developers building real-time apps such as chat, conferencing, file sharing and collaborative tools, as well as gaming apps, who want to avoid reimplementing signalling and connection plumbing, and who need a flexible, extensible foundation for peer-to-peer communication in the browser.

When not to use it

If you need server-side media processing or routing. Peerix is not an SFU or MCU .

License

Peerix is dual-licensed under an open-source license and a commercial license.

Next

See the documentation for full guides, signaling details, and add-ons: