Websockets plugins with node.js

I am developing a application using websockets and wish to use node.js for the backend. I googled and found out that node doesn't supports websockets natively and hence plugins are needed.

I zeroed in on the socket.IO Are there better options available? Further, is it safe to use socket.IO?

There are other options like sockjs but socket.io is more mature and has more information / active development.