From the site:

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. The model is based on a simplified version of the giant network of cities, roads, rivers and sea lanes that framed movement across the Roman Empire. It broadly reflects conditions around 200 CE but also covers a few sites and roads created in late antiquity.

The model consists of 751 sites, most of them urban settlements but also including important promontories and mountain passes, and covers close to 10 million square kilometers (~4 million square miles) of terrestrial and maritime space. 268 sites serve as sea ports. The road network encompasses 84,631 kilometers (52,587 miles) of road or desert tracks, complemented by 28,272 kilometers (17,567 miles) of navigable rivers and canals.

Read more here: http://orbis.stanford.edu/.

From Helma Dik via the Digital Classicist List:

I'm delighted to announce the release of an iPad app for introductory and intermediate Greek readers. Its name is Attikos and it includes a selection of familiar texts, including morphological information. The author is Josh Day, himself recently an intermediate Greek student.

Link to the app store page: http://itunes.apple.com/us/app/attikos/id522497233?mt=8

Writing the app would not have been nearly as feasible without the Perseus Project's generous policies of making its data available to third parties. It includes links to logeion.uchicago.edu, which is an interface for dictionaries and reference works, including Liddell and Scott. Again, that website is based for the most part on resources from the Perseus Project at Tufts. When not connected to the internet, the app itself offers short definitions, as familiar from Perseus.

Texts include the Iliad, some Lysias and Plato, and the Antigone. Some texts have been parsed completely; no translations are included, however. Bonus features allow the user to look up morphological parses of words they type in, or figure them out with the included morphological charts.