Allows you to run software written for MicrosoftWindows under Linux. It is based on Wine and is made by Codeweavers

They specially make sure that MicrosoftOffice (MicrosoftWord, MicrosoftExcel, Powerpoint, MicrosoftOutlook) and InternetExplorer etc work nicely. I have had no trouble using MicrosoftOffice and I also have QuickTime installed.

See also: CXOfficeNotes