If you’re looking for a great cad program for architectural design then you can’t go wrong with DoubeleCAD XT from IMSI. Known as the free version of AutoCAD LT, DoubleCAD will do just about everything any full-featured cad program can. I’ve played around with the program since it came out and it’s a great package. It’s especially great for those who want to do small architectural or mechanical design projects without shelling out a ton of dough… or any dough for that matter. So check it out! You can download a free copy here.