CamChatty.com is a great chatroulette alternative which is rising in popularity over the last few months. More and more people are choosing CamChatty over every other chatroulette & omegle alternative because they have some awesome features that can't be seen anywhere else which include one really cool feature where you can enlarge your partners webcam making it 5x bigger than any other chatroulette cam. So cool! If you havn't already checked it out I suggest you do, you wont be disappointed.
Omegle.com was the very first chatroulette alternative right after chatroulette came around so it gained popularity quickly and has been around for a long time.
chatroulette.com is obviously the original so it must be listed here but chatroulette.com is loosing people because it's harsh banning and it's strict rules are turning people off.
camzap.com has a lot of users it's a pretty simple chatroulette for guys and girls with an add on social networks.