Hi, It was a really very goo thread ! Thanks a lot for mentionning my project ( exoTKAD ), but as I don't know the "AEC World", I'm not sure that exoTKAD will suit the particular needs. Stephane http://www.exotk.org -----Original Message----- (...) I am convinced that to start an open source CAD for Linux the best thing to do is to start from OpenCascade and stick QT on it, like Mr. Routelous is doing with ExoTKad http://exotk.sourceforge.net/ Regards Maurizio -- Galileo Engineering Via Zacchetti 6 I-42100 Reggio Emilia Ph/Fax +390522920496 http://www.slot.it Slot.it is a trademark of Galileo Engineering