Zune (widget toolkit)

Zune is an object-oriented GUI toolkit which is part of the AROS (AROS Research Operating System) project and nearly a clone, at both an API and look-and-feel level, of Magic User Interface (MUI), a well-known Amiga shareware product by Stefan Stuntz.

Zune is based on the BOOPSI system, the framework inherited from AmigaOS for object-oriented programming in C. Zune classes don't derive from existing BOOPSI gadget classes; instead, the Notify class (base class of the Zune hierarchy) derives from the BOOPSI root class.