centrifuge
JavaScript client SDK for bidirectional communication with Centrifugo and Centrifuge-based server from browser, NodeJS and React Native
ttp-agent-sdk
Comprehensive Voice Agent SDK with Enhanced Customizable Widget - Real-time audio, WebSocket communication, React components, and extensive customization options
jsonbird
JSON-RPC 2.0 client/server/peer for any reliable transport. Inter-process communication. REST. WebSocket. WebWorker. Out of order messaging or in-order byte streams
@geckos.io/server
Real-time client/server communication over UDP using WebRTC and Node.js