Macintosh Programmer's Workshop

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Macintosh Programmer's Workshop

An executable MPW Shell script
Developer(s)	Apple Computer
Initial release	September 24, 1986; 37 years ago (1986-09-24)
Stable release	3.6d7
Operating system	Classic Mac OS
Type	Software development tool
License	closed-source freeware
Website	Official MPW website at the Wayback Machine (archived May 14, 2011)

Macintosh Programmer's Workshop (MPW) is a software development environment for the Classic Mac OS operating system, written by Apple Computer. For Macintosh developers, it was one of the primary tools for building applications for System 7.x and Mac OS 8.x and 9.x. Initially MPW was available for purchase as part of Apple's professional developers program, but Apple made it a free download after it was superseded by CodeWarrior. On Mac OS X it was replaced by the Project Builder IDE, which eventually became Xcode.