Omegle - Omegle is one of the most popular online chat website allowing user to communicate with anyone without registration.
Softros LAN messenger - LAN messenger for an internal office chat for home or business users. It does not require a server and is very easy to install and use. It supports personal chats, group chats, message brodcasting, files transfer and remote desktop access.
Chatrandom - Chatrandom provides medium to users for having chat at random with different users around the globe.
MyChat - Secure instant messenger for any network
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.
BORGChat - BORGChat is a LAN messaging software program.