Volgens Paul Thurrot's WinInfo werkt Microsoft momenteel samen met het Israelische softwarebedrijf Mainsoft en een groep developers uit Frankrijk aan een Linux port van een aantal Windows applicaties. Het porten van deze software blijkt moeizaam te verlopen omdat de programma's veelvuldig gebruik maken van Windows en Microsoft API's, waardoor allerlei workarounds moeten worden gelegd. De Linux ports hebben overigens tot doel om Linux gebruikers naar het Windows platform te lokken :
The rumors pop up occasionally, but this time it turns out they're true: Microsoft is working closely with a company called Mainsoft to port its Windows applications to open source operating system Linux and, possibly, other versions of Unix. The complicated undertaking, which has been a work in progress for over a year, requires the companies to map native Win32 API calls to the Linux equivalents so that Windows applications will run normally in that environment. But the process is even more complex than it sounds, since most Microsoft applications--especially those in the Office suite--use a number of proprietary interfaces, and each application requires specific workarounds. The results, so far, have been disappointing.
[...] When queried about Mainsoft's work with Microsoft, the developer I spoke with said that the company's plans were not intended as an "emergency escape plan" in the event that Linux overtakes Windows on the desktop. Instead, Microsoft will leverage Linux as an entry point to Windows, "in the same way it does with the Macintosh version of Office."