Code::Blocks is an open source, cross-platform and free C/C++ IDE. It is build using the wxWidgets GUI library. The WEB site states: "Code::Blocks is a free C++ IDE built specifically to meet the most demanding needs of its users. It was designed, right from the start, to be extensible and configurable." LICENSE: GPL3 or later (IDE) LICENSE: LGPL3 or later (SDK) WWW: http://www.codeblocks.org/