libp2p

A modular peer-to-peer networking stack that handles transport, security, and multiplexing across diverse network environments.

libp2p provides the foundational networking layer for decentralized systems like IPFS and Ethereum 2.0. It solves the fragmentation of peer-to-peer connectivity by abstracting protocols (TCP, QUIC, WebRTC) and addressing nodes via content-agnostic multiaddresses. The framework manages complex tasks including NAT traversal, peer discovery (DHT), and pubsub messaging. By decoupling the application logic from the underlying network transport, libp2p enables developers to build resilient, distributed applications that function reliably across browsers, mobile devices, and data centers.

https://libp2p.io