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.
JFlex - The Fast Scanner Generator for Java
Lexical analyzer generator (also known as scanner generator) for Java, written in Java. A rewrite of JLex with more features. [Open Source, GPL]