- Apperson's Freeware CAD Program 'CadStd' Click here to go to my new cadstd.com domain Use this program for: Computer Aided Design, Drafting, Teaching CAD, Creating Blue Prints, Architectural Drawings, Sheet Metal Designs, Drawing Room Additions, Simple Schematics, Pattern Layouts, Set Designs, As An Alternative To Expensive CAD Programs, Mechanical Drawings, Street Maps, Hobby Drawings, House ...pw1.netcom.com/~apperson