Omegle - Omegle is one of the most popular online chat website allowing user to communicate with anyone without registration.
Mighty Networks - Mighty Networks enables entrepreneurs, organizations, and companies to create and grow a community-powered brand.
Chatrandom - Chatrandom provides medium to users for having chat at random with different users around the globe.
Bigtent - BigTent is a web-based organization and communication portal for groups.
LuckyCrush - Live random video chat
Nabble - Nabble is a forum software that are embeddable and fully customizable with scripting language.