Well, I am writing virtually all of my programs in assembly language. And as a general, I am an assembly language programming propagandist.
So, when I needed a web site and was limited to use php and other "backend", "web" languages, I was a little bit irritated. So, in 2012 I created my first web project in assembly language MiniMagAsm. It is a little CMS for a blog type of web site. But it is CGI based and is unable to handle very big amount of users simultaneously.
Later I decided to create something that will show all the advantages of the assembly language, so implemented FastCGI framework and then a web forum, as a application that really needs all the performance of the server. In a result now I have a forum that is running on very lightweight (and cheap) web hosting and is almost impossible to be overloaded by an usual events such as slashdot effects and such.
In a perspective, I am planning to migrate to RWASA web server and this way to have the whole web hosting solution implemented in assembly language.