Omegle - Omegle is one of the most popular online chat website allowing user to communicate with anyone without registration.
Manyverse - A social network off the grid
Chatrandom - Chatrandom provides medium to users for having chat at random with different users around the globe.
Sociall (Beta) - A secure and private decentralised social network for all.
LuckyCrush - Live random video chat
data.world - The social network for data people