A high-performance, feature-packed library for all your mapping needs
Free minimalist software for maps, import DWG, DXF, SHP, KML, GeoJSON
Interactive visualization of plate tectonics.
A geographic toolkit for dealing with geometry, geography, formats
Rich layers, better user experience, big data geographic visualization
A multiplayer First-Person-Shooter game built in Java 3D
A map-based discussion forum ("argumentation map")