SockJS VS Socket.io

Compare SockJS vs Socket.io and see what are their differences.

SockJS

WebSocket emulation - Node.js server (by sockjs)

Socket.io

Realtime application framework (Node.JS server) (by socketio)
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SockJS Socket.io
2 825
2,087 59,971
0.4% 0.4%
3.9 7.8
5 months ago 14 days ago
JavaScript TypeScript
MIT License MIT License
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

SockJS

Posts with mentions or reviews of SockJS. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-12-18.
  • WebSockets and Node.js - testing WS and SockJS by building a web app
    3 projects | dev.to | 18 Dec 2023
    SockJS is a library that mimics the native WebSockets API. Additionally, it will fall back to HTTP whenever a WebSocket fails to connect, or if the browser being used doesn’t support WebSockets. Like WS, SockJS requires a server counterpart; its maintainers provide both a JavaScript client library and a Node.js server library.
  • Top WebSocket libraries for Node.js in 2022
    12 projects | dev.to | 7 Jan 2022
    SockJS is a JavaScript library that provides communication between the client and the server in a way similar to the native WebSockets API. SockJS functions with a server counterpart in the form of sockjs-node and SockJS-client, a JavaScript client library.

Socket.io

Posts with mentions or reviews of Socket.io. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2024-02-08.

What are some alternatives?

When comparing SockJS and Socket.io you can also consider the following projects:

Primus - :zap: Primus, the creator god of the transformers & an abstraction layer for real-time to prevent module lock-in.

SocketCluster - Highly scalable realtime pub/sub and RPC framework

Centrifugo - Scalable real-time messaging server in a language-agnostic way. Self-hosted alternative to Pubnub, Pusher, Ably. Set up once and forever.

peerjs - Simple peer-to-peer with WebRTC.

Introducing .NET Multi-platform App UI (MAUI) - .NET MAUI is the .NET Multi-platform App UI, a framework for building native device applications spanning mobile, tablet, and desktop.

Mercure - 🪽 An open, easy, fast, reliable and battery-efficient solution for real-time communications

deepstream.io - deepstream.io server

Pusher - Ruby library for Pusher Channels HTTP API

ws - Simple to use, blazing fast and thoroughly tested WebSocket client and server for Node.js

Faye - Simple pub/sub messaging for the web

centrifuge - Real-time messaging library for Go. The simplest way to add feature-rich and scalable WebSocket support to your application. The core of Centrifugo server.

vba-websocket - VBA Websocket Sample (Echo Server Client)