GNUstep is a set of general-purpose Objective-C libraries based on the
OpenStep standard developed by NeXT (now Apple) Inc. The libraries
consist of everything from foundation classes, such as dictionaries and
arrays, to GUI interface classes such as windows, sliders, buttons, etc.

Please contact the GNUstep maintainers at <discussion@gnustep.org> in 
case of questions and help offers.

LICENSE: LGPL2 or later (framework)
LICENSE: GPL3 or later (tools)

WWW: http://www.gnustep.org/