Monochrome for Windows

Monochrome is an IRC client, mainly intended for long-time IRC users. It includes automatic identification with NickServ on most popular IRC networks, full Unicode support, sending and receiving of DCC file transfers with auto-accept whitelist, trigger word list, auto-away monitoring of away state of other users, logging, and customizable command aliases. Monochrome also contains variety of entertaining easter eggs.

Some of its missing features include complete color code support which only renders in channels, queries and status windows is supported. Scripting though functionality such as identifying with NickServ is automated, so there's no major need for running custom scripts.