Geographic library
GPS log file viewer and analyzer
Viking is a free/open source program to manage GPS data
Toolkit for working with and mapping geospatial data
GPS track editor for editing tracks and planning (multiple) day tours
A Matlab software to estimate Euler pole parameters
An information system for cyclists in Berlin and Brandenburg
Simple GPS tracking server
Open source cross-platform Java Visual Traceroute
Open source system for GPS tracking devices
Set of Java interfaces for geospatial applications
Adjustment of local surveying networks, binary builds for Windows
Tool to work on map data, to check the data and generate your own maps
Offline vector map display ported from OsmAnd
Plugins for OpenCPN
Sight Reduction for Air Navigation with Python