If you are familiar with XChat for UNIX/GTK+/X Windows, then you will be at home with X-Chat Aqua.

X-Chat Aqua uses the IRC engine from XChat and has been designed to look and feel like XChat.

As time goes by, I expect that I will add features that are not necessarily part of XChat.

What's New:

Smarter algorithm for selecting a tab after closing the front tab.
[1287935] implemented /lastlog command (CL)
Universal binary
New server list
Pref for /part all channels on sleep
Prefs for keys that switch tabs
irc:// protocol support fixed
Auto away
mIRC color protocol bug (Eugene Pimenov)
UTF8 tab completion fix
nick completion sort pref (A-Z, last spoke)
mIRC reverse color protocol fix (Matteo Panella)