Socket.IO vs ws: What are the differences?
Developers describe Socket.IO as "Realtime application framework (Node.JS server)". It enables real-time bidirectional event-based communication. It works on every platform, browser or device, focusing equally on reliability and speed. On the other hand, ws is detailed as "A Node.js WebSocket library". It is a simple to use, blazing fast, and thoroughly tested WebSocket client and server implementation.
Socket.IO and ws belong to "Realtime Backend / API" category of the tech stack.
Some of the features offered by Socket.IO are:
- Real-time analytics - Push data to clients that gets represented as real-time counters, charts or logs.
- Binary streaming - Starting in 1.0, it's possible to send any blob back and forth: image, audio, video.
- Instant messaging and chat - Socket.IO's "Hello world" is a chat app in just a few lines of code.
On the other hand, ws provides the following key features:
- Simple to use
- Blazing fast
- WebSocket client and server for Node.js
Socket.IO and ws are both open source tools. It seems that Socket.IO with 47.7K GitHub stars and 8.68K forks on GitHub has more adoption than ws with 12.4K GitHub stars and 1.6K GitHub forks.