This site represents a collaborative effort between Villanova University and the Augustinian Historical Institute at the Katholieke Universiteit Leuven.  It is essentially a bibliography of Augustine, tagged for content, and arranged accordingly into a hierarchy of browsable categories.  The database was originally in French, with the translation into English and other languages incomplete (including for some categories), but ongoing.  Additionally, the entire bibliography can be searched by keywords.  This is an important online database for this fundamental author.

http://www.findingaugustine.org/