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.
This is the second most popular services package for UnrealIRCd.
Statistics on IRC usage on the Internet, such as which IRC Server software and
Services software is un use. Also has statistics on SSL/TLS and CAP support.