Kiwi IRC - A hand-crafted IRC client that you can enjoy. Designed to be used easily and freely.
Worlize - Worlize is the platform that allows users to communicate with each other in a fun way and play games that are created by the users on this platform.
Colloquy - Traditionally, chat clients on the Mac have been anything but glamorous.
JabbR - A chat application built with ASP.NET and SignalR.
Terminal on FB Messenger - Take control of your terminal through Facebook Messenger
Chattp - Chattp is the software that simply converts your page into chat by augmenting the browser Windows.