Geoplan-Geospace is a set of two applications: GeoplanW et GeospacW. Each one allows to draw geometrical constructions in the plane or in the space respectivelly.
version downloaded on february, 17th, 2010, from the CREEM website (http://www.aid-creem.org/telechargement.html). it is free for teachers, but still under development. I installed the french version.