Viking is a free/open source program to manage GPS data
GDAL wheels for python and C/C++ projects (Linux only)
Plugins for OpenCPN
Interactive visualization of plate tectonics.
Analysis and display of Census, business, government attribute data
Spectral Data - binary builds for Windows 10
Geostatistics and geosciences modeling software
Multiplatform Ham Radio APRS and Mapping Program
Land survey field crew data management for .RAW and .JOB file types.
OTB is an open-source C++ library for remote sensing images processing
Toolbox for geoscientists and geo enthusiasts
Open Street Map (OSM) tools, OSM/XML parser, tag extractor
MeteosatTool is for visualization and processing meteo satellite image
A frontend for gpsbabel
Simple example for triangulate polygon with allegro engine (C++)
Interactive OpenGL map projection and navigation with geodetic utils.
GPSBabel converts and transfers data like waypoints, tracks & routes.