Maybe some people would ask, "why don't you just use Clutter?" The anwser is the author of MadButterfly know name of Clutter, but he don't know what is Clutter exactly when he start the project. The author of MadButterfly is some kind of cowboy, he make things just because he have some ideas. Actually, he know what Clutter just one week after starting the project. Some guy send him a video from Andre Schmidt. Andre implements a software to control volumne of sound card as a concept proving for idea of using SVG as a media to connect UI designers and application programmers. The work of Andre is based on Clutter. It is first time the author of MadButterfly know what Clutter is exactly.
Although, they are so similar. We can also find some thing different. Clutter is heavily depend on OpenGL/OpenGL ES. Most embedded systems do not have OpenGL included. MadButterfly have a static/compile time SVG to C translator. MadButterfly is focus on implementing mechanism to adapt SVG to C and other languages. Clutter is about more and more heavy.
MadButterfly is supposed to be a light-weight GUI toolkit for embedded or small devices.