Socket.IO enables real-time bidirectional event-based communication.
It works on every platform, browser or device, focusing equally on reliability and speed.
Push data to clients that gets represented as real-time counters, charts or logs.
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.
Allow users to concurrently edit a document and see each other's changes.
USED BY EVERYONE
From Microsoft Office, Yammer, Zendesk, Trello... to hackathon winners and little startups.