Convex 3D is a convertor, extractor, and viewer for such popular 3D formats as 3DS, Wavefront OBJ, and Lightwave 3D. It is written in C++ and uses a modular design. The package includes a standalone conversion tool (console) and GUI application (Qt and OpenGL are required) for viewing and more. It is not meant to be a modeler, but it can be a powerful tool to hack into 3D files made by 3rd party modelers.