Multiplatform Ham Radio APRS and Mapping Program
NOTE: Code commits are FROZEN on SourceForge: New code is now at <http://github.com/Xastir/Xastir>. Real-time tracking & messaging of stations via radio/internet APRS data streams, w/125 map formats supported. Linux/FreeBSD/Solaris/MacOSX/Windows in any of 7 languages. Can also be used for mobile mapping w/GPS. MAILING LISTS ARE AT: PROJECT->WEB SITE.
ForeRunner X01 toolkit provides an easy access to Forerunner 201/301/305/305E GPS-units. There are multiple command line tools to read data from GPS into database and tools to export data in different formats like gpx and tcx.
StateVis is a package that allows states (or groups) to create a browsable database of their Landsat holdings.