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), 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.