GTK (GIMP Toolkit)
GTK (GIMP Toolkit) offers a complete set of object oriented graphical control elements (widgets) from one off tools to complete application suites. GTK+ offers easy to use APIs for many languages like C++, Haskell, JavaScript, Objective C, Pascal, Perl, Python, etc. and GObject, a GLib object system. GTK (GIMP Toolkit) runs on Windows, Unix-like and Linux systems.
