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First released in 1983 by IMSI (International Microcomputer Software, Inc), 4 Point Graphics was one of the earliest drawing and animation programs for the IBM PC. It competed against a drawing program called PC Crayon.
TurboCAD is a low-cost 2D/3D Computer Aided Design program that competed with AutoCAD and Generic CADD. It was first available for DOS, and later Mac, Windows 3.x, and Windows 9x/NT.