Viking is a free/open source program to manage GPS data
Build your own GPS unit
An information system for cyclists in Berlin and Brandenburg
Visualize deep ocean biogeochemical sediment samples in 2D and 3D!
A GUI for the freeware Geographical Information System PCRaster
Analysis and display of Census, business, government attribute data
Multiplatform Ham Radio APRS and Mapping Program
Visualize data from the opencellid.org project
SVG Based WWW Mapping Module Patch for WebKit
NOTE: Use Fltk_Contour insted this code!
Cartography tools for ARC/INFO