Quotes Database System (formerly Salty Quotes Database, named so because it was made for the development site saltine.net) is a small script written by Kyle Florence a few years ago that will store IRC quotes, it's like your own personal bash.org.
Perforins Bash is a "Quotes Management System" written in Perl. Users can submit chat quotes which will be checked by the administrator and then put into the database. It´s like the popular german-bash.org but open source!
...Anna^ has a multitude of functions, including the ability to save small notes, quotes, haikus and more. She can also interact with various websites, like google and bash.org.
IMPORTANT: As of 1 September 2011, I recommend that you download the fork of Rash here: https://github.com/paxed/rash-qdb-fork . Rash is a clone of the website bash.org. It was a project of mine in high school, and is no longer maintained.