If you have worked with CAD, or even dabbled with CAD drafting, you probably know how powerful and important these tools are across a variety of industries. Computer aided design and drafting software is used not only in architecture and engineering, but also in the creation of video games and in the classroom. Due to the high demand of CAD, and the increased need for companies to invest in a CAD designer, computer aided drafting all together can cost an awful lot of money. Fortunately, we have compiled a list of the best free and open source CAD software! Now, you can enjoy all the fun offered by a computer aided design without the heavy price tag