WebSockets & Realtime Packages
Realtime communication libraries for WebSockets, pub/sub channels, and live data sync — the building blocks behind chat, presence, and collaborative UIs.
Packages in WebSockets & Realtime
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ws
A simple, blazing-fast, thoroughly tested WebSocket client and server library for Node.js.
Uvicorn
A lightning-fast ASGI server for Python, built on uvloop and httptools.
aiohttp
Asynchronous HTTP client and server framework for Python's asyncio, covering both API calls and building web/WebSocket services.
Socket.IO
Bidirectional, low-latency, event-based realtime communication for Node.js and the browser.
websockets
Build correct, fast WebSocket servers and clients in Python with asyncio, threading, or Sans-I/O APIs.
http-proxy-middleware
The one-liner Node.js proxy middleware for connect, express, next.js, hono, and more.
Slack SDK for Python
The official Python SDK for building apps, bots, and integrations on the Slack Platform.
websocket-client
A low-level, dependency-free WebSocket client for Python supporting both synchronous and event-driven connections.
python-socketio
Python implementation of the Socket.IO realtime protocol for both servers and clients.
Tornado
Python web framework and asynchronous networking library built for high concurrency
Crisp SDK Web
Typed TypeScript SDK for embedding the Crisp live chat widget in React, Vue, and Angular apps.
sockjs-client
Browser WebSocket emulation library that automatically falls back across streaming and polling transports for reliable realtime connections.
chrome-remote-interface
A Node.js client for the Chrome DevTools Protocol, exposing every browser command, event, and type as a plain JavaScript API.
GramJS
Full-featured MTProto client for building Telegram user bots and apps in Node.js and browsers
client-sdk-js
JavaScript/TypeScript client SDK for adding realtime video, audio, and data to web apps via LiveKit Cloud or a self-hosted server.
python-engineio
Python implementation of the Engine.IO realtime transport protocol powering Socket.IO servers and clients.
Flask-SocketIO
Socket.IO integration that brings real-time WebSocket communication to Flask applications
pyzmq
Python bindings for ZeroMQ, the lightweight messaging library for building distributed, concurrent, and asynchronous applications.
Autobahn|Python
WebSocket and WAMP protocol implementation for Python, running natively on both Twisted and asyncio.
sse.js
A flexible EventSource replacement for JavaScript with POST support, custom headers, and automatic reconnection.
centrifuge-js
Real-time JavaScript SDK for connecting browser, Node.js, and React Native apps to Centrifugo and Centrifuge servers.
elevenlabs-js
The official Node.js SDK for the ElevenLabs voice AI API, covering text-to-speech, speech-to-text, dubbing, voice cloning, and real-time conversational agents in one typed client.
@parcel/reporter-dev-server
Parcel's built-in dev-server reporter, serving bundled output with hot module replacement and Node worker support.
aiortc
A pure-Python implementation of WebRTC and ORTC built on asyncio, for real-time audio, video, and data channel communication.
