Ashlar Vellum (1990) 2 Graphics Engineering Windows

Ashlar Vellum is a CAD package for mechanical engineers and designers, that includes the ability to intelligently predict where the user wants to connect the next object. There were both "2D" and "3D" versions.

• 1.x (Win)

Autodesk AutoCAD (1984) 29 Graphics Engineering Windows

AutoCAD, from Autodesk and first released in 1982, is a powerful Computer Aided Design tool. It was, and still is, often considered the standard for CAD tools. Primarily for the IBM PC platform, it was ported to x86 machines with higher video resolutions such as the Zenith Z-100 and NEC APC. Intermittently, versions for the Macintosh appeared. Later versions use a dongle copy protection.

• r11 (Win)

Cadlogic Instinct (1987) 5 Engineering Windows

Instinct is a computer aided design drafting tool designed for Microsoft Windows 1.x. It was designed specifically with ease of use in mind, and was among the few early applications designed for Microsoft Windows 1.

• 1.0

Drafix (1990) 4 Graphics Engineering Windows

Drafix is a powerful, high performance, and feature rich 2-dimensional computer aided design tool. Despite being a 2-D CAD program, it had many features of high end 3-D CAD software, and competed directly with AutoCAD. Drafix was first was fist released in 1986 for DOS, and was the first professional CAD program released for Microsoft Windows.

• 1.0 (Win)