Behold Open Open University Wiki.
It looks a bit crappy (Wikia’s templates aren’t that good and I personally drew the logo), but it covers all applications used in the courses required for my BSc (Hons) Computing. In fact, I only ever needed Windows for a single course: MST121 – I was unable to make MathCAD run.
Although I’ll finish my studies in a few weeks, I will try and continue to help students get stuff to work. Let’s open the OU for everyone!