Geographic library
French Geographic Information System
GDAL wheels for python and C/C++ projects (Linux only)
Google Earth Enterprise - Open Source
Interactive visualization of plate tectonics.
Geostatistics and geosciences modeling software
Automatic delineation of forest borderlines
OTB is an open-source C++ library for remote sensing images processing
Tool-Kit aplication for system Geo Integrations
Tiny tool capable of stitching hundreds images into one single image
... the open-source glide computer
GPSBabel converts and transfers data like waypoints, tracks & routes.