APX Atari Program Exchange

Atari Program Exchange (APX) was -- and remains -- a rare software distribution model, in which Atari would encourage end users to create software for their 8-bit computers, then would sell the software through a catalog, and pay royalties to the programmers. APX was operational as part of Atari from 1982 through 1984
APX Atari Program Exchange - 1982

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