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socketio/socket.io

★ 63,243TypeScriptMIT94

Bidirectional and low-latency communication for every platform

What it is

Our issues list is exclusively reserved for bug reports and feature requests. For usage questions, please use the following resources: read our documentation check our troubleshooting guide look for/ask questions on Stack Overflow create a new discussion If you think that you have found a security vulnerability in our project, please do not create an issue in this GitHub repository, but rather refer to our Security Policy.

When to use it

Reach for socket.io when you need a server, API layer, runtime, job queue or realtime channel — it's written in TypeScript and fits stacks tagged javascript, node, socket-io, websocket.

Category
Backend & APIs
Also in
—
Stars
63,243
Forks
10,232
Last push
yesterday
Created
2010-03-11
Open issues
192
Website
socket.io
#javascript#node#socket-io#websocket#typescript

Quick start

$ git clone https://github.com/socketio/socket.io.git

Hand it to your AI

Read https://ideas.asveas.com/r/socketio/socket.io.md and help me add socketio/socket.io to my project. Explain the setup steps for my stack and show the minimal code to get it working.
Backend & APIsMarkdown .mdOpen on GitHub ↵

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FAQ

What is socket.io?

socketio/socket.io is a backend tool on GitHub: Bidirectional and low-latency communication for every platform Our issues list is exclusively reserved for bug reports and feature requests.

When should I use socket.io?

Reach for socket.io when you need a server, API layer, runtime, job queue or realtime channel — it's written in TypeScript and fits stacks tagged javascript, node, socket-io, websocket.

What are the best alternatives to socket.io?

Popular alternatives in Backend & APIs: fastapi/fastapi (105k★), oven-sh/bun (96.7k★), appwrite/appwrite (58k★), denoland/deno (109k★), trpc/trpc (40.8k★).

Is socket.io actively maintained?

socketio/socket.io looks very actively maintained: the last push was yesterday (2026-11-10), with 63,243 stars and 192 open issues.

What license does socket.io use?

socketio/socket.io is published under the MIT license. Check the repository's LICENSE file before commercial use.