MicroCity is a framework for spatial analysis and simulation. It is lightweight, fast, portable, extendable and user friendly. Users can easily operate large GIS and Grid data and perform Spatial, Fractal, Network analysis and simulation.
FracAda is the Ada 2005 implementation of the Fractal component model
[http://fractal.ow2.org/]
It is an experimental project using the GNAT (GPL) compiler