Viking is a free/open source program to manage GPS data
Plugins for OpenCPN
Interactive visualization of plate tectonics.
Spectral Data - binary builds for Windows 10
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
MeteosatTool is for visualization and processing meteo satellite image
Simple example for triangulate polygon with allegro engine (C++)
Interactive OpenGL map projection and navigation with geodetic utils.