Ultimate++ is a radical and innovative GUI toolkit whose number one priority is programmer productivity. C++ is a great programming language but C++ programmers are sometimes hampered by the lack of effective libraries. U++ libraries enable genuine productivity gains with shorter development times and greatly reduced application source code size.

Ultimate++ is a C++ cross-platform rapid application development suite. It includes a set of libraries (GUI, SQL, etc..), and an integrated development environment.

Rapid development is achieved by the smart and aggressive use of C++ rather than through fancy code generators. In this respect, U++ competes with popular scripting languages while preserving C/C++ runtime characteristics.

The U++ integrated development environment, TheIDE, introduces modular concepts to C++ programming. It features BLITZ-build technology to speedup C++ rebuilds up to 4 times, Visual designers for U++ libraries, Topic++ system for documenting code and creating rich text resources for applications (like help and code documentation) and Assist++ - a powerful C++ code analyzer that provides features like code completion, navigation and transformation.

TheIDE can work with GCC, MinGW and Visual C++ 7.1 or 8.0 compilers (including free Visual C++ Toolkit 2003 and Visual C++ 2005 Express Edition) and contains a full featured debugger. TheIDE can also be used to develop non-U++ applications.

U++ distributions combine U++ with 3rd party tools like MinGW compiler or SDL library to provide an instant development platform.

GTK+ is a multi-platform toolkit for creating graphical user interfaces. Offering a complete set of widgets, GTK+ is suitable for projects ranging from small one-off projects to complete application suites.

GTK+ is based on three libraries developed by the GTK+ team:

• GLib is the low-level core library that forms the basis of GTK+ and GNOME. It provides data structure handling for C, portability wrappers, and interfaces for such runtime functionality as an event loop, threads, dynamic loading, and an object system.
• Pango is a library for layout and rendering of text, with an emphasis on internationalization. It forms the core of text and font handling for GTK+-2.0.
• The ATK library provides a set of interfaces for accessibility. By supporting the ATK interfaces, an application or toolkit can be used with such tools as screen readers, magnifiers, and alternative input devices.

TinyFCK: a TinyMCE with the FCKEditor’s file manager/uploader, nothing less, nothing more.

Tk is a graphical user interface toolkit that takes developing desktop applications to a higher level than conventional approaches. Tk is the standard GUI not only for Tcl, but for many other dynamic languages, and can produce rich, native applications that run unchanged across Windows, Mac OS X, Linux and more.

FOX is a C++ based Toolkit for developing Graphical User Interfaces easily and  effectively. It offers a wide, and growing, collection of Controls, and provides  state of the art facilities such as drag and drop, selection, as well as OpenGL  widgets for 3D graphical manipulation. FOX also implements icons, images, and  user-convenience features such as status line help, and tooltips.  Tooltips may even be used for 3D objects!

 Considerable importance has been placed on making FOX one of the fastest  toolkits around, and to minimize memory use:- FOX uses a number of techniques  to speed up drawing and spatial layout of the GUI. Memory is conserved by  allowing programmers to create and destroy GUI elements on the fly.

 Even though FOX offers a large collection of Controls already, FOX leverages C++  to allow programmers to easily build additional Controls and GUI elements,  simply by taking existing controls, and creating a derived class which simply  adds or redefines the desired behavior.

 One of the prime design goals of FOX is the ease of programming; thus, most  controls can be created using a single line of C++ code; most parameters have  sensible default values, so that they may be omitted, and layout managers ensure  that designers of GUI's do not have to worry about precise alignments.

 Another nice feature of FOX which significantly reduces the number of lines of  code which have to be written is FOX's ability to have widgets connect to each  other, and passing certain commands between them; for example, a menu entry Hide  Toolbar can be directly connected to the Toolbar, and cause it to hide.

 Finally, FOX makes it easy to maintain the state of the GUI in an application  by having the GUI elements automatically updating themselves by interrogating  the application's state. This feature eliminates the large amount of effort that  may go into sensitizing, graying out, checking/unchecking etc. depending on  the application state.