The Purdue University Libraries' subscription to Brepolis Latin Online includes access to several different databases:
Archive of Celtic-Latin Literature
Aristoteles Latinus Database
Dictionary of Latin Dictionaries
Dictionary of Medieval Latin from British Sources
Library of Latin Texts
Monumenta Germaniae Historica
The Brepolis Latin Online Cross Database Searchtool (CDS) can be used to do a combined search of the Archive of Celtic-Latin Literature; Aristoteles Latinus Database; Library of Latin Texts; and Monumenta Germaniae Historica. The Cross-Database Searchtool also provides access to Thesaurus Formarum.