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       GNUstep - A free implementation of the OpenStep standard


       GNUstep  provides  an Object-Oriented application development framework
       and toolset for use on a wide variety of computer  platforms.   GNUstep
       is  based on the original OpenStep specification provided by NeXT, Inc.
       (now Apple).

       GNUstep is written in Objective-C, an object-oriented superset of the C
       programming  language,  similar  to  SmallTalk.  However  there exist a
       number of brigdes and interfaces  to  develop  GNUstep  programs  using
       other languages like JAVA or Ruby.

       The GNUstep Core System

       The GNUstep core system consists of the following parts:

                   A  set  of  scripts  and  makefiles  that  heavily ease the
                   creation and maintenance of software projects.

                   The FoundationKit libraries  for  non-GUI  tools  providing
                   everything  from string      and array classes, filemanager
              classes to distributed objects.

                   The ApplicationKit containing  widgets,  workspace  classes
              and       means for      applications to interact with the user.
              This is the frontend of      GNUstep’s GUI part.

                   This is the backend of GNUstep’s GUI part  which  does  the
              actual       rendering  and  event  handling. It acts as a layer
              between       gnustep-gui  and  the  operating/drawing   system.
              Backends  exist       for  X11 (one using libart, one using xlib
              drawing) and win32.

              Apart from the above, there exist a number of  addon  libraries,
              like   Renaissance   which   allows  developers  to  specify  an
              application’s user interface in xml.  For database access, there
              is  gdl2  -  the  GNUstep Database Library.  Please refer to the
              GNUstep website for more information.

              GNUstep  is  self-containing.  That  means  that   all   GNUstep
              applications,  tools,  libraries  and add-ons are installed into
              the GNUstep directory hierarchy.  There are four  domains  which
              are  searched  for  files:  the System domain, which should only
              contain the core system files, the Local domain which stores all
              that  has later been installed on the system, the Network domain
              which should be used for importing data from  a  remote  system,
              and  the  User domain which resides in the user’s home directory
              (mostly ~/GNUstep).  See the filesystem.texi document  for  more

       Some Basic Terms:

       Tools and Applications

       In  the  world of GNUstep the term tool refers to command line programs
       whereas applications are fully fledged GUI programs.  Naturally,  tools
       reside  in  the domains’ Tools folder, applications can be found in the
       domains’ Applications folder.

       Applications are either launched using the openapp command or from  the


       In   GNUstep   applications   globally  offer  functionality  to  other
       applications through services  application’s  main  menu.   Apart  from
       services  offered  by  applications,  there  may be programs whose sole
       purpose is the offering of services. They can be found in the  domains’
       Libary/Services folders.

       The Workspace

       The  central  place of the user interface is the Workspace or Workspace
       Manager which acts as an interface between the user and  parts  of  the
       system  like files, processes, etc. The GWorkspace application provides
       this functionality in GNUstep. See  the  GWorkspace  website  for  more

       Getting More Help

       Most discussion and support is taking place on the GNUstep mailinglists
       <>.  Additionally,  most
       larger  projects  have their own mailing lists. Consult the appropriate
       websites for details.

       Alternatively you are invited to  join  the  #GNUstep  IRC  channel  on
       FreeNode (


       gcc(1), gdnc(1), gdomap(8), gopen(1), gpbs(1), make(1), openapp(1)

       GNUstep Websites:

       Official GNUstep website <> - GNUstep Wiki (lots
       of useful information)  <>  -  GNUstep  Project
       Page  <>   - GNUstep Community
       Page  <>   -   GNUstep   Documentation   Library
       <>      -      GNUstep      Build      Guide

       Collaboration World <> -
       <>   -   <>  -    <>     -     GWorkspace     Website


       <>        -
       Archives can be found at <>


       GNUstep is developed and maintained by a large number of people. Please
       see <> for a list.

       GWorkspace  is  developed  by Enrico Sersale. Please see the GWorkspace
       Website for details.

       This   man   page   was   written   by   Martin   Brecher   <martin@mb->.