Run your Windows Applications on Linux
CrossOver allows you to install many popular Windows applications on your Linux computer. Your applications integrate seamlessly into Ubuntu; just click and run. No rebooting, no switching to a virtual machine, and no Windows Operating System license required!
CrossOver lets you run many applications such as Microsoft Office and Quicken. It also lets you run many Windows Games such as World of Warcraft, Steam, and many others.
CrossOver is a polished and supported version of Wine - it is the best way to both use Wine and to support the Wine Project, as CodeWeavers is the primary contributor to the Wine project.