Omegle - Omegle is one of the most popular online chat website allowing user to communicate with anyone without registration.
HeySpace - HeySpace is the only free task and simple project management software with communication and collaboration feature.
Bazoocam - Bazoocam is a popular chat website that rapidly connects you with strangers to chat.
P2 - Share, discuss, and collab with your team. By Wordpress.
Chatrandom - Chatrandom provides medium to users for having chat at random with different users around the globe.
Slack - A messaging app for teams who see through the Earth!