Here is search logs of 650,000 AOL users. It's very interesting to view search history of particular person and analyze his personality. Let's do it together! Read more about AOL search database scandal or view research papers on web searching.
www.codegravity.com
Uses EJB, Hibernate, PostgreSQL, JSP, Struts and allows to maintain books, magazine records, and other library related items through a web interface. [Open source, GPL]