A couple of useful links
Many people combine UnrealIRCd with a services package to provide NickServ
and ChanServ functionality. UnrealIRCd works with the following services packages:
This is by far the most popular choice under UnrealIRCd users. It provides
NickServ, ChanServ, OperServ, BotServ, etc. It is feature-packed and is
extensible through modules. Works both on *NIX (Linux) and Windows.