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.
The employment of the newest GUI widgets offered by the latest version of GTK+ in order to implement the GNOME Human interface guidelines (HIG) ergonomically is the only feature which all GNOME Core Applications have in common. Some of the GNOME Core Applications are essential, while several are not, e.g. GNOME Weather. Most are thin graphical front-ends, e.g. GNOME Software, to underlying Linux system daemons, like e.g. journald, PackageKit, NetworkManager or PulseAudio.
Probably[vague] no Linux distribution includes all GNOME Core Applications into the default installation[original research?]. It is safe to say[vague], that the GNOME Core Applications serve as a means to communicate the intentions of the GNOME HIG by implementing it, and at the same demonstrate the possibilities of current GTK+/Clutter versions[original research?].
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.
Control Center – main interface to configure various aspects of GNOME. Diverse panels represent graphical front-ends to configure the NetworkManager daemon and other daemons.