Windows 2000, XP, Vista, 7 or 8
Fedora GNU/Linux
The Source Code package will work on any Linux distribution which has GTK+, just follow the instructions in the Compiling and Installing page. If you are using Fedora, type yum install gtk2-devel in a terminal, before attempting to compile xchat.
Source Tarballs v2.8
Downloads at SourceForge
CVS Access
Browse the directory manually