Socket.IO

Judgement

What it is

Building block

What it does

A library for real-time, bidirectional communication between browsers and servers over WebSockets with fallbacks, rooms and reconnection.

Adopt it when

You add chat, live updates or collaboration to a Node.js app.

Watch out

Uses its own protocol, so clients must use Socket.IO libraries, and scaling out needs an adapter such as Redis.

Ready for

Production-ready

Runs as

Library

Built with

TypeScript and Node.js

How established

Established: started 16 years ago, latest release socket.io@4.8.4.

What the license allows

You can build it into a product you sell, as long as you keep its copyright notice.

Judged on 2026-11-03 from the project's README and GitHub data. The license and age lines are worked out directly.

Built from

Follow it down: Socket.IO → TypeScript → Go → runs on a microchip

How compilers were built, back to punched paper tape

Built on Socket.IO: 22 projects

1. 1
   Uptime Kuma louislam

   A fancy self-hosted monitoring tool

   Complete system Production-ready You want an easy, UptimeRobot-style monitor on your own server for a homelab or small business.

   ★ 93k MIT JavaScript Active, pushed today
2. 2
   Nest nestjs

   A progressive Node.js framework for building efficient, scalable, and enterprise-grade server-side applications with TypeScript/JavaScript 🚀

   Framework or platform Production-ready You build larger Node.js back ends and want Angular-style structure.

   ★ 77k MIT TypeScript Active, pushed today
3. 3
   Leon leon-ai

   🧠 Leon is your open-source personal assistant.

   Complete system Experimental You want to experiment with a self-hosted voice assistant you can extend.

   ★ 18k MIT TypeScript Active, pushed today
4. 4
   Audiobookshelf advplyr

   Self-hosted audiobook and podcast server

   Complete system Production-ready You own audiobook files or follow podcasts and want them streamed to your phone with synced progress.

   ★ 15k GPL-3.0 JavaScript Active, pushed yesterday
5. 5
   Boardgame.io boardgameio

   State Management and Multiplayer Networking for Turn-Based Games

   Framework or platform Usable You are building an online board or card game in JavaScript.

   ★ 12k MIT TypeScript Active, pushed 3 days ago
6. 6
   Frappe frappe

   Low code web framework for real world applications, in Python and Javascript

   Framework or platform Production-ready You are building or extending a database-heavy business application, particularly anything in the ERPNext ecosystem.

   ★ 11k MIT Python Active, pushed 6 days ago
7. 7
   MiroTalk miroslavpejic85

   🚀 Open-source, self-hosted P2P WebRTC video conferencing for fast, private real-time communication. Create browser-based meeting rooms with no downloads or time limits, plus screen sharing, chat, whiteboard, recording, and collaboration.

   Complete system Usable You want quick private video rooms for small groups on your own server with minimal infrastructure.

   ★ 4.8k AGPL-3.0 JavaScript Active, pushed today
8. 8
   Mirotalksfu miroslavpejic85

   🏆 Self-hosted, open-source WebRTC video conferencing platform for real-time communication and collaboration. A modern alternative to Zoom, Google Meet, Jitsi Meet, and Microsoft Teams, powered by scalable SFU architecture with Mediasoup.

   Complete system Usable You want your own Zoom-style meeting server for larger group calls and can run a Node.js service with open UDP ports.

   ★ 3.1k AGPL-3.0 JavaScript Active, pushed today
9. 9
   Whitebophir lovasoa

   Online collaborative Whiteboard that is simple, free, easy to use and to deploy

   Complete system Production-ready Teachers or small groups want an anonymous, easy-to-host shared drawing board.

   ★ 2.7k AGPL-3.0 JavaScript Active, pushed today
10. 10
    Whiteboard cracker0dks

    Lightweight collaborative Whiteboard / Sketchboard

    Complete system Usable You want a simple self-hosted whiteboard to embed in a meeting or teaching platform.

    ★ 846 MIT JavaScript Active, pushed 8 days ago
11. 11
    Cartcut cartesiancs

    Video Editor for AI agents, built on the belief that open source can beat commercial tools

    Complete system Usable You make motion-heavy short videos and want an editor agents can operate.

    ★ 821 MIT TypeScript Active, pushed today
12. 12
    Call-Me miroslavpejic85

    📞 Open-source, self-hosted WebRTC click-to-call solution for websites. Add a video Call-Me button and let visitors instantly connect with your team through browser-based video communication. Ideal for customer support, sales, consultations, and remote assistance.

    Complete system Usable You want face-to-face video for sales or support from your site without a third-party service.

    ★ 766 AGPL-3.0 JavaScript Active, pushed 8 days ago
13. 13
    Telegram Support Bot bostrot

    A Telegram ticketing/supporting system.

    Complete system Usable Your customers or community already talk to you on Telegram and you want lightweight ticketing there.

    ★ 611 GPL-3.0 TypeScript Active, pushed 2 months ago
14. 14
    Mirotalkc2c miroslavpejic85

    📹 Open-source, self-hosted WebRTC 1-to-1 video calling for private real-time communication. Build secure browser-based consultations, coaching, support, telehealth, and other video call experiences with peer-to-peer communication and screen sharing.

    Complete system Usable You need private one-to-one calls for consultations, coaching or support embedded in your own site.

    ★ 520 AGPL-3.0 JavaScript Active, pushed yesterday
15. 15
    QuickStack biersoeckli

    Open-source, self-hostable alternative to Vercel, Netlify, Railway and Heroku. Self-host any app on your own servers in minutes.

    Complete system Usable You want a Vercel- or Railway-like dashboard on your own VPSes and like that it uses k3s under the hood.

    ★ 364 GPL-3.0 TypeScript Active, pushed yesterday
16. 16
    Mirotalkbro miroslavpejic85

    📡 Open-source, self-hosted WebRTC live broadcasting platform for real-time video, audio, and screen streaming. Build your own broadcasting solution for webinars, events, presentations, announcements, and live online communication without relying on a hosted video platform.

    Complete system Usable You run webinars or announcements and want low-latency broadcasting on your own server.

    ★ 212 AGPL-3.0 JavaScript Active, pushed 3 days ago
17. 17
    Ad-Hoc-Email-Server o4oren

    An ad-hoc disposable temporary mail server. Create and use ad hoc disposable mailboxes for testing or any other purpose.

    Developer tool Usable You need many throwaway mailboxes for testing or for sign-ups you expect to attract spam.

    ★ 412 Apache-2.0 TypeScript Slowing, pushed 7 months ago
18. 18
    PharmaSpot drkNsubuga

    PharmaSpot - Point of Sale for Pharmacies built with Electron

    Complete system Usable A small pharmacy needs a free desktop POS for basic sales and stock.

    ★ 132 MIT CSS Active, pushed 21 days ago
19. 19
    Webrtc-video-conference-simple-peer Dirvann

    A simple video conferencing example using simple-peer

    Template or starter Experimental You want to understand peer-to-peer WebRTC basics with very little code.

    ★ 242 MIT JavaScript Slowing, pushed 9 months ago
20. 20
    Intergram idoco

    Free live chat widget linked to your Telegram messenger

    Integration Experimental You run a small site and want free live chat answered from Telegram.

    ★ 1.4k MPL-2.0 JavaScript Quiet, pushed 3 years ago

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   Gin gin-gonic

   Gin is a high-performance HTTP web framework written in Go. It provides a Martini-like API but with significantly better performance—up to 40 times faster—thanks to httprouter. Gin is designed for building REST APIs, web applications, and microservices.

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