Geographic library
GPS log file viewer and analyzer
Open source cross-platform Java Visual Traceroute
Viking is a free/open source program to manage GPS data
Bootable linux distro for Geospatial Applications
Toolkit for working with and mapping geospatial data
Showing The Amateur radio Repeaters Tool
GWC is a tile server and caching proxy written in Java
Builds Garmin maps from OpenStreetMap
GPS track editor for editing tracks and planning (multiple) day tours
An information system for cyclists in Berlin and Brandenburg
... the open-source glide computer
A cartography program with parameter adjustments and gravity fonctions
A low ram maps downloader to keep your ram free.
Spatial Statistics Libraries & Tools for GeoTools, GeoServer, uDig
French Geographic Information System
Build your own GPS unit