[citation needed]
[citation needed] especially for C#; the only .NET-based language I know of that registers as even a blip in web development is, for better or worse, ASP.NET.
[citation needed] also for PHP frameworks; most PHP web "applications", in my experience, don't use any sort of "framework" at all, instead opting to use CGI with direct manipulation of HTML tags in order to do anything. Facebook is the only significant exception that I'm aware of.