Geographic library
Free software for maps
GDAL wheels for python and C/C++ projects (Linux only)
Interactive visualization of plate tectonics.
Geostatistics and geosciences modeling software
OTB is an open-source C++ library for remote sensing images processing
Tool-Kit aplication for system Geo Integrations
a free and open map of wireless communicating objects
Python-accessible toolkit for Geoscience & Remote Sensing Applications