Project Builder

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Project Builder
Developer(s)NeXT, Apple Inc.
Initial release3.0 / September 8, 1992; 29 years ago (1992-09-08)[1]
Final release
2.1 / December 1, 2002; 19 years ago (2002-12-01)[2]
Operating systemNeXTSTEP, macOS
TypeIntegrated development environment (IDE)
LicenseFreeware with open-source components

Project Builder was an integrated development environment (IDE) originally developed by NeXT for version 3 of the NeXTSTEP operating system by separating out the code editing parts of Interface Builder into its own application.[1]

After Apple Computer purchased NeXT and turned NeXTSTEP into the Mac OS X operating system, the NeXTSTEP version of Project Builder became ProjectBuilderWO (maintained only for WebObjects development), and they created a new Project Builder from scratch for software development with the first version being introduced with Developer Preview 4 of Mac OS X.[3] This version of Project Builder, informally dubbed PBX.[4] was distributed with the first few versions of Mac OS X but with the release of Mac OS X v10.3 it was redesigned, reintegrated with Interface Builder and rebranded as Xcode.[5][6][7]

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. ^ a b Garfinkel, Simson; Mahoney, Michael. NeXTSTEP Programming, Step One: Object-Oriented Applications (PDF).
  2. ^ "OS X December 2002 Developer Tools". OSNews. Retrieved 2022-01-15.
  3. ^ John Siracusa (May 24, 2000). "Mac OS X DP4". Ars Technica. Retrieved 2022-01-15.
  4. ^ Summermatter, Paul R. (March 25, 2001). "Getting started PB -> PBX". Cocoabuilder. Archived from the original on 2015-04-29.
  5. ^ Dippery, Michael (2 June 2015). Professional Swift. p. 36. ISBN 9781119016779. Xcode is based on Project Builder, an IDE you use to write programs for the NeXTSTEP operating system, the forerunner of Mac OS X
  6. ^ Wentk, Richard (June 2011). Xcode 4. p. 5. ISBN 9781118108260. A free copy of Project Builder was bundled with every copy of OS X
  7. ^ Macworld Staff, Editors (Sep 13, 2010). "OS X's ten most innovative features". 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... {{cite web}}: |author= has generic name (help)