friends sites
http://www.blender3darchitect.com
http://www.opensourcemania.it/
http://www.libreoffice.org/ video scrittura
http://www.blender.org/ grafica 3d
http://code.google.com/p/topmod/
http://www.mitsuba-renderer.org/
http://www.gimp.org/ grafica 2d
http://www.3ds.com/products/draftsight/download-draftsight/
http://sourceforge.net/apps/mediawiki/free-cad/index.php?title=Main_Page
http://www.scribus.net/canvas/Scribus
http://fixounet.free.fr/avidemux/ montaggio video
http://www.ubuntu-it.org/ sistema operativo