Autodesk AutoCAD (1984) 11 Graphics Engineering DOS

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.

• 1.x (DOS)
• 2.x (DOS)
• r10 (DOS)
• r11 (DOS)

Lotus Magellan (1989) 1 Utility Document DOS

Magellan was a desktop file viewer and search tool. It indexes all files on your hard drive, and you can search for related information across file formats.

• 1.0
• 2.0

Proteus Design Suite (1992) 0 Engineering DOS

Proteus Design Suite is a circuit design and simulation program.

• 2.20