A51 file extension

Authorware 5.x library

File extension: .A51 - Authorware was originally a company founded in 1987 by Michael Allen as well as the multimedia product produced by Authorware, Inc. Allen originally helped in the development of the PLATO Learning Management System (PLM) collaborative learning system during the 1970s. Authorware is an interpreted, flowchart based, graphical programming language. Authorware is used for creating interactive programs that can integrate sound, text, graphics, simple animation, and digital movies.