Computer-aided design (CAD) is a form of computer technology used to create and analyze designs. CAD is used in a variety of industries, including architecture, automotive, aerospace, and manufacturing. CAD software allows users to create 3D models and drawings of objects, which can be used for product design and engineering. CAD software also enables users to simulate how objects will interact with each other in a given environment.

The open-design movement is a social movement which advocates for the free sharing of information and resources related to the design of physical products. The movement is based on the idea that designs should be open to all, allowing anyone to use, modify, and share them freely. It is closely related to the open-source software movement, which seeks to make software available for free and without restrictions. The open-design movement has been gaining traction in recent years, with many companies embracing the concept of open design and releasing their designs under open licenses. Open-design initiatives have been launched in many different industries, from furniture and architecture to electronics and robotics. Open-design projects are often collaborative efforts between designers, engineers, hobbyists, and other members of the community who are passionate about creating products that can be shared freely.