You could have downloaded GTWorks 14.2 from our software library for free. The software is categorized as Photo & Graphics Tools. Gtworks.exe is the common file name to indicate the GTWorks installer. The actual developer of the software is GrayTech Software, Inc. The most popular version of the program is 14.2.
From the developer:
GTWorks™ is a comprehensive 3-D CAD/CAM system for design, documentation and manufacturing. All software applications share a common user interface, with easy-to-learn, on-screen menus, special function keys, and user-definable icon buttons. Applications are linked to a common database, eliminating the need for data reproduction, conversion and file maintenance.
You may want to check out more software, such as Plate 'n' Sheet Development Pro., CAD To DMC or TachyCAD, which might be related to GTWorks.