a 'virtual machine' for several classic graphical point-and-click adventure games based on LucasArts' SCUMM (Script Creation Utility for Maniac Mansion) system.
an experimental Python-to-C++ compiler. It accepts pure but implicitly statically typed Python programs and generates optimized C++ code. (Google sponsoring)
a free Ruby-based environment aiming to make programming easily available to beginners, especially children. Its driving force was an essay titled The Little Coder's Predicament written in 2003 by why the lucky stiff (AKA why)
a free/open source, cross platform IDE. It is developed in C++ using wxWidgets. Using a plugin architecture, its capabilities and features are defined by the provided plugins.
concept created by lone developer (Eskil Steenberg) bent on creating an entire massively multiplayer online world single-handedly, using procedural generation techniques that cause the game to build itself by starting with clever rules and exploring them
open-source, cross platform IDE for the C/C++ programming languages (build and tested on Windows XP SP3, (K)Ubuntu 8.04, and Mac OSX 10.5.2). CodeLite is distributed under the terms of the GPL license.