MagicWB - The Workbench Enhancer.
MagicWB is a full replacement for the Graphic User Interface of the Workbench and has become the standard visual interface on the Amiga. Over the last years MagicWB has received various merits and an overwhelming response from Amiga magazines and users worldwide proclaiming it "a must for all Amiga users" (see the extras section below for independent reviews). Since its debut in 1993, dozens of other PD authors have supported the spirit of MagicWB through their contribution of hundreds of 3rd-party packages and extensions to MagicWB and also by adopting its new style to their programs. Even commercial applications are supporting the multi-colored look & style of MagicWB.
Although MaigWB hasn't been in development for a few years you can still register a copy at the site http://www.sasg.com/mwb/