JawaBot - pluggable IRC bot with optional Wicket-based web UI. Based on PircBot, CDI/Weld, JPA 2.0/Hibernate.

Aims to put multiple functionalities under one bot, while still keeping the structure of the code sane. Mavenized.
Plugins:

Jira - resolves name, status and assignee from a Jira issue tracker. Configurable. Default config supports opensource repos: JBoss, Codehaus, Apache and others.
    Logger - logs IRC events to a DB. Has a web UI.
    Reservation - for reservation of resources over IRC. Has a web UI.
    WhereIs - looks for nicks in all channels, supports wildcards.
    Messenger - delivers messages to offline users when they connect ("answering machine").
    AutoOp - gives op to users.
    Social - reacts to "Hi!" etc. Hello World plugin.
    PasteBin