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.
xsb.sourceforge.net
A research-oriented Logic Programming system for Unix and Windows/DOS-based systems, representing a semantically enriched functional superset of Prolog and offering among other things evaluation through full SLG resolution.