• The ChanServ, channel service bot, is used to protect channel operators and help run the channel. This is convenient for the operators because they do not need to have an operator on the channel all of the time to keep their status.
• The NickServ, nickname service bot, is used to register and protect user nicknames.
• The MemoServ, memo service bot, is used to record and deliver messages to users who are currently offline.
• The OperServ, is used by IRC Operators.
• The BotServ, which allows channel operators to assign bots to their channels. these bots are mostly a ChanServ representative in the channel.
• The HelpServ, the help service bot, is used to provide help on a variety of IRC topics.
• The HostServ, host service bot, is used to allow general users to register a vhost so that their real IP address on IRC is hidden.
• BOPM (Blitzen Open Proxy Monitor)
• TheHelper (our local Network Help Bot)

--- with friendly support from Wikipedia.org