Geographic library
A C library for parsing/normalizing street addresses around the world
Interactive visualization of plate tectonics.
Geostatistics and geosciences modeling software
Toolbox for geoscientists and geo enthusiasts
OTB is an open-source C++ library for remote sensing images processing
A frontend for gpsbabel
a free and open map of wireless communicating objects
... the open-source glide computer
Python-accessible toolkit for Geoscience & Remote Sensing Applications