Institute of Mathematical Geography Articles, papers and Solstice, an electronic journal of the interaction between geography and mathematics.
USGS: Geo Data FTP File Access. These data files are for use in geographical information systems for analysis and integration with other geospatial data.
Moland - Monitoring Land Use / Cover Dynamics Project aimed at providing a spatial planning tool that can be used for assessing, monitoring and modelling the development of urban and regional environments.
Delft Institute for Earth-Oriented Space Research Research activities related to processing and analyzing space based Earth observations and modeling/computing the high precision satellite orbits that are often required for that type of analysis. Geodesy is also a research area.