MIT’s implementation of OpenGeoportal is called MIT Geoweb. It was collaboratively developed as an open source, federated web application to discover, preview, and retrieve geospatial data from different repositories. Several of the country's leading universities and a state agency have formed a partnership to make thousands of geospatial data layers available through a single, open source interface. The application also incorporates some new innovative search techniques. Partners include Tufts, Harvard, MIT, Princeton, MassGIS, Stanford and UC Berkeley. The single interface is skinnable and may have slight differences in appearance based on the institution hosting the application. You can search for GIS data held in the MIT Geodata Repository and other local colleges.