GNOME Core Applications is the collection of about 30 computer programs, that are packaged as part of the standard free and open-sourceGNOME desktop environment. GNOME Core Applications have the look and feel of the GNOME desktop; some applications have been written from scratch and others are ports.
There are countless[quantify]GTK+- and Clutter-based programs written by various[quantify] authors. Since the release of GNOME 3, The GNOME Project concentrates on developing a set of programs that accounts for the GNOME Core Applications. All programs that form the GNOME Core Applications, have a certain design and the tight integration with one another in common. Some programs are simply renamed existing programs with a revamped user interface, while other were written from scratch.