Python data, Leaflet.js maps
GPS log file viewer and analyzer
Toolkit for working with and mapping geospatial data
Geographic feature extraction and data mining
Open source cross-platform Java Visual Traceroute
Open Source Desktop GIS with Surveying and Cartography Functionality
Open-source JavaScript library for mobile-friendly interactive maps
Tool to work on map data, to check the data and generate your own maps
Offline vector map display ported from OsmAnd
OTB is an open-source C++ library for remote sensing images processing
Tiny tool capable of stitching hundreds images into one single image