Cross platform (lin/win/mac) geographical information system (GIS)
Geographic library
Viking is a free/open source program to manage GPS data
An information system for cyclists in Berlin and Brandenburg
Toolkit for working with and mapping geospatial data
GWC is a tile server and caching proxy written in Java
Geographic feature extraction and data mining
Automated detection of the unknown early map projection
Open Source Desktop GIS with Surveying and Cartography Functionality
Visualize deep ocean biogeochemical sediment samples in 2D and 3D!
Open source system for GPS tracking devices
A GUI for the freeware Geographical Information System PCRaster
GDAL wheels for python and C/C++ projects (Linux only)
Plugins for OpenCPN
Analysis and display of Census, business, government attribute data
Interactive visualization of plate tectonics.
Spectral Data - binary builds for Windows 10
Geodesy based library (geodetic and geocentric functions)
Geostatistics and geosciences modeling software
A reference implementation of the Polish geobotanical grid
Q-Rap (www.QRap.org.za) is a Radio Network Planning plug-in for QGIS