Project Builder

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Project Builder was an integrated development environment (IDE) originally developed by NeXT for the NeXTSTEP operating system.[1] It was rewritten and informally dubbed PBX[2] while distributed by Apple Computer for software development on Mac OS X computer systems prior to Mac OS X v10.3. It was superseded by Xcode, as of Mac OS X 10.3 Panther.[3][4][5]

GNUstep's ProjectCenter IDE is a rough workalike of the original NextStep design; additional functionality is provided by ProjectManager, a 3rd-party GNUstep IDE meant for greater usability.


  1. ^ NeXTSTEP Programming, Step One: Object-Oriented Applications", by Simson Garfinkel and Michael Mahoney
  2. ^ Getting started PB -> PBX, By Paul R. Summermatter, Mar 25 2001, Cocoabuilder[dead link] Archived
  3. ^ Professional Swift By Michael Dippery, Page 36, Xcode is based on Project Builder, an IDE you use to write programs for the NeXTSTEP operating system, the forerunner of Mac OS X
  4. ^ Page 5, A free copy of Project Builder was bundled with every copy of OS X., Xcode 4, by Richard Wentk
  5. ^ OS X's ten most innovative features, By Macworld Staff, Editors, Sep 13, 2010, Macworld, ...Included in the package was an IDE—Project Builder—that was a tweaked version of the IDE that came with NeXT, the OS whose acquisition laid much of the foundation for OS X. In 2003, Project Builder became the now familiar Xcode...