Free Google Sketchup
Google Sketchup is free softaware that you can used for making dan presenting 3D model, and also for designing like house, building and many more thing.The designing report can saved,exported or maked a movie and also ploted.there are more hundred an engineering drawing, contruction, arsitektur, grapic design, interior and landscape in it's galery.You can used version 7 now and all free: