Alibre Design:

Alibre Design is the first professional 3D CAD system that everyone can afford. The low price includes a full 3D parametric solid modeler with associative 2D drafting and detailing, Web-based data sharing and management and both real-time and asynchronous (check-in/check-out) team design for close to one-tenth the cost of even a mid-range CAD system. Alibre Design is extremely easy to use, through its efficient user interface, as well as through a focus on the most useful features. Other CAD applications are cluttered with “extra” features that make them hard to learn and use. In contrast, Alibre Design customers regularly comment on how surprisingly easy it is to install, learn and use the application, and be productive immediately. Furthermore, Alibre Design is different because its native file format is based on STEP which improves data exchange and interoperability with other CAD systems. Data exchange through STEP and other supported formats, including SAT (ACIS), IGES, DXF, DWG, and STL