See also:
ActiveDeveloper Interactive runtime Objective-C IDE for Windows, Mac OS X, OpenStep NIS. http://www.interactive-technology.com/
Cocoa Apple's Objective-C based programming environment for Mac OS X. http://developer.apple.com/cocoa/index.html
GNUstep A GNU project to write a completely OpenStep compatible programming environment based on Objective-C, with intentions to also maintain Mac OS X compatibility. http://www.gnustep.org/
The MiscKit Frameworks A free collection of Objective-C objects useful to Rhapsody, OPENSTEP, GNUstep, and NeXTSTEP programmers. http://www.misckit.com/
OpenStep Specification A copy of NeXT Computer's OpenStep Specification. This is the specification that both Cocoa and GNUstep are based on. http://www.gnustep.org/resources/OpenStepSpec/OpenStepSpec.html
Portable Object Compiler A preprocessor that will convert Objective-C into regular C. http://users.telenet.be/stes/compiler.html
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