A premier mind-mapping software written in Java
Toolkit for working with and mapping geospatial data
Extensible Line-drawing & Polygon-filling Rasterization Libs for Java
Offline vector map display ported from OsmAnd
Concise spatial query and representation system (c-squares)
open source python packages for X-ray MicroLaue Diffraction analysis
3D .NET engine for Windows, Linux, Mac