MorphOS is an AmigaOS-like operating system designed for Power and PowerPC based computers.

The core, based on the Quark microkernel, is proprietary, although several libraries and other parts are open source, such as the Ambient desktop.

[4] The earliest versions of MorphOS ran only via PPC accelerator cards on the Amiga computers, and required portions of AmigaOS to fully function.

[8][9] A busy promotional year followed in 2003, with appearances at conventions and exhibitions in several places around the world, including the Consumer Electronics Show (CES) in Las Vegas.

It is API compatible with AmigaOS 3.1 and has a GUI based on the Magic User Interface (MUI).

PowerUP MorphOS was most recently updated on 23 February 2006; however, it does not exceed the feature set or advancement of the Pegasos release.

[15][16] A version of MorphOS for the Efika, a very small mainboard based on the ultra-low-power MPC5200B processor from Freescale, has been shown at exhibitions and user gatherings in Germany.

Ambient is the built-in MUI-based desktop environment for MorphOS,[20] the development was started in 2001 by David Gerber.