Cross platform (lin/win/mac) geographical information system (GIS)
GeoServer repository
Toolkit for working with and mapping geospatial data
GWC is a tile server and caching proxy written in Java
Open source system for GPS tracking devices
Land survey field crew data management for .RAW and .JOB file types.
Source code for ArcGIS Viewer for Flex - a great application framework
Ready-to-use appliance for GIS, Data Mining and Analysis, Modelling...
GPSBabel converts and transfers data like waypoints, tracks & routes.