Powerful Windows shell extension allowing to preview images.
SageThumbs is a powerful shell extension allowing to preview enormous amount of image formats directly in Windows Explorer by using Pierre-e Gougelet's GFL library (XnView's author). Please read carefully the following information: As SageThumbs is a Windows Explorer context menu extension, there is no an executable file that you should launch to bring it up. To use it, just open any folder with image files in Windows Explorer, and then right-click a file you want to preview. You'll see...
a parametric 3D CAD modeler
... for very advanced extension and customization. FreeCAD is based on OpenCasCade, a powerful geometry kernel, features an Open Inventor-compliant 3D scene representation model provided by the Coin 3D library, and a broad Python API. The interface is built with Qt. FreeCAD runs exactly the same way on Windows, Mac OSX and Linux platforms.
DiscWrapper is a cover designer for home-made discs. It was made with Code::Blocks and it uses the wxWidgets library. It has template covers. Depending on the case there are pages where you can place labels, images, and lists.
C++ wrapper and extension of OpenGL. Provides Scene Graphing natively and cross-platform development through "glue" libraries. "glues" available so far; Qt, X11, GLUT, SDL, Allegro (with AllegGL ), with Win32 to come. Base library depends on OpenGL only.
Milk Engine is a flexible engine suitable for almost any game. Milk Engine will contain everything needed to develop a game, even for the newbie. Yet its very useful for advanced users. Its based on OpenGL and SDL, therefore its also cross-platform.