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