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.

• detectrtcA tiny JavaScript library that can be used to detect WebRTC features e.g. system having speakers, microphone or webcam, screen capturing is supported, number of audio/video devices etc.
• ccxt-irA JavaScript / TypeScript / Python / C# / PHP cryptocurrency trading library with support for 100+ exchanges
• sailsAPI-driven framework for building realtime apps, using MVC conventions (based on Express and Socket.io)
• @uppy/companionOAuth helper and remote fetcher for Uppy's (https://uppy.io) extensible file upload widget with support for drag&drop, resumable uploads, previews, restrictions, file processing/encoding, remote providers like Dropbox and Google Drive, S3 and more :dog:
• parse-sseParse Server-Sent Events (SSE) from a Response
• @moq/qmuxQMux protocol (draft-ietf-quic-qmux-02) over WebSockets
• tiktok-live-api-sdkTikTok LIVE API SDK for Node.js & TypeScript. Real-time TikTok LIVE chat, gifts, likes, follows, viewer counts and PK battles via the EulerStream managed TikTok LIVE API, with typed clients for webcast signing, rooms, gifts, rankings, LIVE alerts, moderat
• event-source-plusA better EventSource API
• async-mqttPromise wrapper over MQTT.js
• next-http-proxy-middlewareNextjs HTTP Proxy Middleware
• @socket.io/postgres-adapterThe Socket.IO Postgres adapter, allowing to broadcast events between several Socket.IO servers
• @wecom/aibot-node-sdk企业微信智能机器人 Node.js SDK - WebSocket 长连接通道
• permessage-deflatePer-message DEFLATE compression extension for WebSocket connections
• @liveblocks/node-prosemirrorA server-side utility that lets you modify prosemirror and tiptap documents hosted in Liveblocks.
• machine-as-actionRun a machine from an HTTP or WebSocket request.
• it-wsSimple async iterables for websocket client connections
• @moq/web-socket-streamA WebSocketStream polyfill: a plain WebSocket wrapped as { readable, writable } streams with backpressure
• pubnub-reactPublish & Subscribe Real-time Messaging with PubNub
• websocket-tsA WebSocket client library with optional reconnecting and buffering capabilities.
• colyseus.jsColyseus Multiplayer SDK for JavaScript/TypeScript
• superwstestsupertest with added WebSocket capabilities
• colyseusMultiplayer Framework for Node.js
• @100mslive/hms-video-store@100mslive Core SDK which abstracts the complexities of webRTC while providing a reactive store for data management with a unidirectional data flow
• @speclynx/apidom-ns-asyncapi-2AsyncAPI 2.x.y namespace for ApiDOM.
• @liveblocks/emailsA set of functions and utilities to make sending emails based on Liveblocks notification events easy. Liveblocks is the all-in-one toolkit to build collaborative products like Figma, Notion, and more.
• bnc-sdkSDK to connect to the blocknative backend via a websocket connection
• obs-websocket-jsOBS Websocket API in Javascript, consumes @Palakis/obs-websocket
• socketcluster-serverServer module for SocketCluster
• socket.io-mocka mocked version of a socket.io socket for testing
• markstream-vueVue/Nuxt streaming Markdown renderer for AI chat, LLM token streams, SSE/WebSocket output, incomplete Markdown, long documents, Mermaid, KaTeX, and stream-diffs powered code blocks.
• playwright-ws-traceAdds WebSocket frame tracing to Playwright trace viewer
• webtorrentStreaming torrent client
• http-mitm-proxyHTTP Man In The Middle (MITM) Proxy
• ts-bus<p align="center"> <img src="logo.png" width="100" height="100"/> </p>
• @stream-io/filterEmulate Stream API backend filters for client-side use (e.g. filtering WS events)
• websocket-as-promisedA WebSocket client library providing Promise-based API for connecting, disconnecting and messaging with server
• tgridGrid Computing Framework for TypeScript
• @colyseus/uwebsockets-transport<div align="center"> <a href="https://github.com/colyseus/colyseus"> <img src="media/logo.svg?raw=true" width="60%" height="300" /> </a> <br> <br> <a href="https://npmjs.com/package/colyseus"> <img src="https://img.shields.io/npm/dm/coly
• @colyseus/monitorWeb Monitoring Panel for Colyseus
• ngx-sse-clientA simple SSE (Server Sent Events) client for Angular applications.
• sse-decoderServer-Sent Events implementation in Typescript. Used by the Gin Framework.
• @sanity/portable-text-editorPortable Text Editor made in React
• koa-websocketLight wrapper around Koa providing a websocket middleware handler that is koa-route compatible.
• crisp-apiCrisp API wrapper for Node - official, maintained by Crisp
• webstomp-clientStomp client over websocket for browsers and nodejs
• websocket13Simple WebSocket protocol 13 client with no native or heavy dependencies
• @socket.io/cluster-adapterThe Socket.IO cluster adapter, allowing to broadcast events between several Socket.IO servers
• @soniox/clientOfficial Soniox SDK for client-side applications
• @xmpp/websocketXMPP websocket for JavaScript
• agent-relayReal-time agent-to-agent communication system

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