WinOnX is a new utility from NES Software that lets users run Microsoft Windows applications on Macs. It works with Mac OS X 10.6 or higher, costs US$4.99 and is available in the Mac App Store.
A video demonstration of WinOnX is available at http://www.winonx.com/video . Once WinOnX is installed, Mac users can run Windows applications with a double-click of an application’s icon, says NES CEO Hisham El-Emam
Technically speaking, WinOnX is a Windows emulator and compatibility layer based on the open source Wine project. It manages the communications between Mac OS X and 16- and 32-bit Windows applications written for Windows 2.x and higher.