HexChat is an easy-to-use graphical IRC chat client for Windows and Unix based on XChat. It allows you to join multiple IRC channels (chat rooms) at the same time, talk publicly, have private one-on-one conversations, transfer files, etc.
DexChat facilitates sending and receiving messages among connected computers.
A simple single site code management and package management system.
An OTRS appliance that is easy to use and lightweight.