Omegle - Omegle is one of the most popular online chat website allowing user to communicate with anyone without registration.
ChatHub - ChatHub is a free Omegle alternative where you can meet random strangers online using your webcam.
Emerald Chat - An omegle alternative on the web with several enhanced features.
4ScoreChat - 4ScoreChat matches you with strangers for instant text-based improv.
BlaBla.Cam - BlaBla.Cam is basically Omegle or a Chatroulette reimplemented with the latest web technologies. It offers a simple and lightweight user interface that works on both computer and smartphone, and which can optionally be installed as an application.
Rolechat - This website is set up in much the same way that Shamchat is, except more functional.