New Jacoby - A revised edition of the Greek texts of Felix Jacoby’s Die Fragmente der Griechischen Historiker where relevant. It includes several new authors and many fragments of existing authors that were either unknown to Jacoby or excluded by him. It also gives commentaries in those cases where Jacoby failed to do so.
ORBIS – The Stanford Geospatial Network Model of the Roman World reconstructs the time cost and financial expense associated with a wide range of different types of travel in antiquity.
Pleiades - Geographic info on classical places pulled into Google Maps from the Barrington Atlas and other sources.