Ambient (desktop environment)
Ambient is a MUI-based desktop environment for MorphOS. Its development was started in 2001 by David Gerber. Its main goals were that it should be fully asynchronous, simple and fast. Ambient remotely resembles Workbench and Directory Opus Magellan trying to mix the best of both worlds.
Features
Ambient does not strictly follow the Amiga Workbench interface paradigm but there are still many similarities: while programs are called tools program attributes are called tooltypes, data files are projects and directories are drawers.
support for ARexx scripting language
default icon library for hundreds of fileformats
fully asynchronous, multi-threaded design
fast asynchronous file I/O functions and file notifications
support for PNG and other Amiga icon formats
built-in icon, workbench and wbstart libraries
built-in applications like disk formatting and commodities manager
panels which are used as program launchers
Ambient is localized for various languages and while part of MorphOS it is also available separately. There are various visual effects in Ambient which are taking an advantage of hardware accelerated visual effects in MorphOS.