The Computerized Historical Linguistic Database of the Latin Inscriptions of the Imperial Age is working
to develop and digitally publish … a comprehensive, computerized historical linguistic database that contains and manages the Vulgar Latin material of the Latin inscriptions found in the regions of the Roman Empire (Illyricum, Gallia, Britannia, Germania, Hispania, Italia, Africa, Roma and eastern provinces).
Free guest access is available but a bit buggy.
HT: AWOL