Omegle - Omegle is one of the most popular online chat website allowing user to communicate with anyone without registration.

Server Fault - Server Fault is a Q&A site for system administrators and IT professionals that's free.

Chatrandom - Chatrandom provides medium to users for having chat at random with different users around the globe.

Reddit - Reddit gives you the best of the internet in one place. Get a constantly updating feed of breaking news, fun stories, pics, memes, and videos just for you.

MeowChat - MeowChat is kind of instant messaging platform that offers the fun and entertaining way to the strangers across the globe to come and interact with the other strangers like them.

MetaFilter - Community weblog