Computer aided design (CAD) software, or CAD drawing or drafting software, can help a user easily design a product with a computer. CAD output is often in the form of electronic files for print or manufacturing operations, which is the base of computer aided manufacturing (CAM) systems.
CAD programs can be used to design products in a two dimensional (2D) space, or in a three dimensional (3D) environment. They have been widely used in the fields of architectural design, home design, woodworking, interior design, mechanical engineering, fashion design, printed circuit board (PCB) production, landscape design, jewelry manufacture, furniture design, bathroom design, textile design, and automotive production.
A professional and proprietary CAD application could cost thousands of US dollars or more. Sometimes it may be too expensive to a small business owner or an independent designer who is looking for a low-cost and inexpensive alternative. Under this circumstance, open source 2D or 3D CAD software could be a good choice. There are several kinds of open source CAD programs available for free download on the Internet. A user can download the open source applications and use them for free, while focusing his or her budget on software services such as customization and support.
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