Comment Re:Biggest Visual Studio defect: Runs on Windows (Score 1) 543
There is a product by a company called Xamarin that lets you write C# and compile it for many platforms - iOS, Android, Mac, and Windows. You can either develop in their IDE, or treat their product as a plugin to Studio.
There's also Mono. The ServiceStack web services framework is completely portable between windows and mono on linux.
Or you can use PyTools (http://pytools.codeplex.com/) to write python.
It's still predominantly used for Windows. But the other opportunities are much more than they used to be.