A software package for quantitative analysis in Panbiogeography
Viking is a free/open source program to manage GPS data
Toolkit for working with and mapping geospatial data
An information system for cyclists in Berlin and Brandenburg
Open source system for GPS tracking devices
NMEA 0183 library for Java
A GUI for the freeware Geographical Information System PCRaster
Plugins for OpenCPN
Multiplatform Ham Radio APRS and Mapping Program
Some pythons plugins to enhance fantasy maps creation with QGis
Geolocation Postcode Algorithm
HistoryLoc is a practical system to track place names over time.