If you just want to do low-level coding in a language other than those, the Free Pascal project (http://www.freepascal.org/) is very much alive, and very much none of the above. It's a nice, low-level language that also has a very nice, .NET-like object system if you want to reach for it. (In fact, the object system it has, modeled on Delphi's, was the inspiration for .NET's system.)

(Note that both the Free Pascal project and its sister project, Lazarus, have horrid websites that are not reflective of the activity or quality of either product. In fact, the top post on the Lazarus website right now is about how they need to fix the website.)