Enhancer Software Release 2 was released for Amiga OS4

The Enhancer Software is a collection of utilities, commodities, classes, datatypes and libraries with the aim of enhancing the Amiga system software experience.
It is distibuted both as a digital download from AMIStore App Store and Updater tool. It is also available as a boxed CD.

http://wiki.amiga.org/index.php?title=Enhancer_Software