GNUstep is a cross-platform, object oriented
environment composed of frameworks, tools, and
servers (daemons). It is very similar to the Cocoa
frameworks from Apple, and tries to maintain
compatibility with Cocoa wherever it is desired
and possible. The frameworks provide classes for
containers, distributed objects, object archiving,
file management, text system, font management,
image composition, WYSIWYG PostScript graphics,
and more.