WebSockets and realtime

12-month change compares the average of the last 4 weeks of downloads with the first 4 weeks of the 52-week series. Gzip size is for the whole package, as measured by Bundlephobia. "-" means the value has not been fetched.

• @automattic/lasagnalasagna.js, the reference client for the Lasagna web service
• actionheroThe reusable, scalable, and quick node.js API server for stateless and stateful applications
• hapi-plugin-websocketHAPI plugin for seamless WebSocket integration
• koa-socket-2Koa meets socket.io connected socket
• opentok-reactReact components for OpenTok.js
• @threadbase-sh/streamerPTY session management, WebSocket streaming, and REST API server for Claude Code conversations
• socketio-authAuthentication for socket.io
• @veltdev/tiptap-velt-commentsTiptap Extension to add Google Docs-style overlay comments to your Tiptap editor. Works with the Velt Collaboration SDK.
• @zoom/rtmsNode.js Wrapper for the Zoom RTMS C SDK
• @ipshipyard/node-datachannelWebRTC For Node.js and Electron. libdatachannel node bindings.
• @liveblocks/zustandA middleware for Zustand to automatically synchronize your stores with Liveblocks. Liveblocks is the all-in-one toolkit to build collaborative products like Figma, Notion, and more.
• @vercel/ai-sdk-openai-websocket-fetchWebSocket transport for the AI SDK OpenAI provider — drop-in fetch replacement that routes streaming requests through a persistent WebSocket connection.
• @ws-kit/bunBun platform adapter for WS-Kit leveraging native WebSocket API with built-in pub/sub and low-latency message routing
• localtunnelsA simple and smart tunneling solution. Expose your localhost to the world.
• @ennuicastr/webrtcaec3.jsPort of WebRTC's AEC3 (acoustic echo canceller, version 3) library to WebAssembly/JavaScript
• @dramaorg/delectus-culpa-reprehenderit[![github actions][actions-image]][actions-url] [![coverage][codecov-image]][codecov-url] [![dependency status][deps-svg]][deps-url] [![dev dependency status][dev-deps-svg]][dev-deps-url] [![License][license-image]][license-url] [![Downloads][downloads-im
• tinywsTiny WebSocket middleware for Node.js based on ws.
• tunnelmoleTunnelmole, an open source ngrok alternative. Instant public URLs for any http/https based application. Available as a command line application or as an NPM dependency for your code. Stable and maintained. Good test coverage. Works behind firewalls
• shoestreaming sockjs for node and the browser
• express-sseAn Express middleware for Server-Sent Events (EventSource)
• qminder-apiQminder Javascript API. Makes it easy to leverage Qminder capabilities in your system.
• @rivetkit/framework-baseBase framework utilities for RivetKit client integrations
• @larksuite/channelChannel SDK — let agents and external services integrate with the Feishu/Lark messaging system: reliable inbound events, message normalization, streaming replies, media upload, card interactions.
• connecticConnectic is a javascript library for pub sub messaging, event handling, and data synchronization in real-time applications.
• @cossistant/coreCore library for connecting to Cossistant API and managing data fetching
• sockudoNode.js client to interact with the Sockudo REST API
• @cordisjs/plugin-serverServer plugin for cordis
• angular-socket.io-mockDrop in Mock replacement for angular-socket-io
• @sockudo/clientSockudo JavaScript client full port on Bun + Oxc + Vite 8
• @zitterorg/illo-hic-voluptatemReact components for [Stripe.js and Elements](https://stripe.com/docs/stripe-js).
• @hyper-fetch/reactReact hooks and utils for the hyper-fetch
• primus-emitterSimple emitter wrapper for Primus
• @kesha-antonov/react-native-action-cableUse Rails ActionCable channels with React Native for real-time WebSocket communication.
• ngx-mqttThis library isn't just a wrapper around MQTT.js for angular. It uses observables and takes care of subscription handling and message routing.
• @eulerstream/euler-websocket-sdkBrowser & Node.JS cross-compatible module for the Euler Stream WebSocket service.
• @100mslive/hms-whiteboard[](https://github.com/100mslive/web-sdks/actions/workflows/lint-test-build.yml) [![Bundle Size](https://badgen.net/bundlephobia/minzip/@100mslive
• vSecure, Synchronized, Realtime, Cloud, Native JavaScript Variables & Events
• @webpieces/cloudtasks-clientCloud Tasks enqueue client generated from a shared @PubSub API contract (twin of http-client)
• @nestjs-redis/socket.io-adapterRedis-powered Socket.IO adapter for NestJS enabling scalable WebSocket connections
• markstream-reactReact/Next.js streaming Markdown renderer for AI chat, LLM token streams, SSE/WebSocket output, incomplete Markdown, long documents, Mermaid, KaTeX, stream-diffs powered code blocks, and custom React components.
• @workadventure/noise-suppressionBrowser noise suppression powered by LiteRT.js and DTLN models
• vue-socket.io-extendedSocket.io bindings for Vue.js and Vuex (inspired by Vue-Socket.io)
• @veltdev/slate-velt-commentsSlate Extension to add Google Docs-style overlay comments to your Slate editor. Works with the Velt Collaboration SDK.
• koa-easy-wsSimple Koa middleware for websocket handling
• socket.io-streamstream for socket.io
• @azure/web-pubsub-socket.ioEnable Socket.IO server support Azure Web PubSub Service
• @socket.io/postgres-emitterThe Socket.IO Postgres emitter, allowing to communicate with a group of Socket.IO servers from another Node.js process
• promise-wsA Promise-Based WebSocket implementation for Node.js
• @signalwire/webrtcSignalWire WebRTC library
• sails.io.jsJavascript SDK for communicating w/ a Sails server via WebSockets/socket.io.

• ws vs sockjs
• ws vs sockjs-client
• @copilotkit/aimock vs mock-socket
• partysocket vs reconnecting-websocket