Provides a toolkit for creating widgets through Minecraft. Users can create frames and various controls, as well as provide customized layout managers and themes. Themes have complete control over the rendering process by providing "UIs" for specific component types that handle rendering components of their respective type.

The only library currently required by the project is Slick2D, which can be found at http://slick.ninjacave.com/. The dependency upon this library may be removed by deletion of UnicodeFontRenderer.java and slight modification to SimpleTheme.java to replace the instantiation of UnicodeFontRenderer with the instantiation of a normal FontRenderer.