UWIN - Unix for Windows
There are times when you are forced to use a Windows machine and there is no way of getting your hands on a PC running Linux. This situation is common if your office PCs all run windows and the company policy forbids you from installing an alternate OS on it. And you feel your productivity is severely hampered because certain tasks - which could easily be accomplished using the plethora of command line tools in Linux - do not have an easy solution in Windows.
This is where UWIN comes into the picture. UWIN or Unix for WINdows, is developed and released by AT&T Laboratories and David Korn - the creator of Korn shell. UWin basically consists of a set of tools and libraries which helps application developers compile and run Unix applications natively on windows.