MorphOS is a microkernel-based operating system (OS) for the Pegasos hardware platform. It runs on PowerPC processors by Freescale and IBM. It supports original AmigaOS MC680x0 programs by proprietary task-based emulation, and most newer, PPC/AmigaOS programs by API wrappers. It is API-compatible with AmigaOS 3.1, but has many enhancements to make it more modern, such as a GUI based on the Magic User Interface. Source code licensing is mixed, proprietary and open source: the OS kernel is proprietary, but several other parts are open source: libraries, desktop interfaces (including the default GUI, Ambient). Development is by a core team, and contributors.