A simple introduction to Objective-C, from the GNUstep project. By Adam Fedor.

A GNU project to write a completely OpenStep compatible programming environment based on Objective-C, with intentions to also maintain Mac OS X compatibility.

A copy of NeXT Computer's OpenStep Specification. This is the specification that both Cocoa and GNUstep are based on.

Smalltalk interpreter for GNUstep, used mainly as scripting framework to make scriptable servers or programs, to script GNUstep applications, or to talk to registered distributed objects, and work well with Objective-C. [Open Source, GPL]

An implementation of distributed objects written for GNU Objective C. It is similar to NeXTstep's Distributed Objects system.

An attempt to provide an Object-Oriented application development framework and tool set for use on a wide variety of computer platforms. Based on the original OpenStep specification provided by NeXT, Inc.

Official site of GNUstep: free implementation of NeXTStep/OpenStep specification.

published by NeXT Computer, Inc.

GNU's NeXT Step Clone

Official site of GNUstep: free implementation of NeXTStep/OpenStep specification.