socket.io — Socket.IO enables real-time bidirectional communication

This is great. I'm tempted to try and shoehorn it into one of our apps just because I can - people find realtime data pretty amazing.

Creator here, feel free to ask me any questions about socket.io! We have some really cool announcements in the pipeline for you folks in the coming weeks.

I have been using socket.io more than a 5years, It's the best realtime framework till today among the other frameworks.

It's new release 2.0 works perfect with the proxies and firewalls too. It makes it perfect fit for any realtime application.

Pros:

Amazing realtime framework, allow bidirectional communication. also support private and group message broadcast.

Cons:

none