Java IRC Bot is a Java framework for writing IRC bots quickly and easily. Its features include an event-driven architecture to handle common IRC events, flood protection, DCC resuming support, ident support, and more.
SquirrelTrivia is a Java and PIRC-bot-framework based IRC bot designed specifically for trivia, and plans to include public and private trivia, amd highscores. Attention: Now defunct, please see https://sourceforge.net/forum/forum.php?forum_id=781270