Microsoft today marks its 50th anniversary, during which time it has been one of Apple’s longest-standing and most prolific competitors.
Microsoft was founded on April 4, 1975 by Bill Gates and Paul Allen, starting out as a software company developing a BASIC interpreter for the Altair 8800. It quickly become central to the personal computing revolution, including through its early collaboration with Apple, where Apple licensed Microsoft’s BASIC for the Apple II in 1977.
Microsoft’s most significant early involvement with Apple came with the development of applications for the original Macintosh, including Word and Excel, which helped legitimize the Mac as a productivity tool. The 1985 launch of Microsoft Windows, which featured a graphical user interface similar to the Macintosh, prompted accusations from Apple that Microsoft had copied key elements of its design.
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