I would not say that I use it regularly, but I have a somewhat working version of what I remember to be the Norton Editor in C++ / ncurses. It was 100% motivated by seeing antirez's artistic triumph, and my effort is sadly lacking in comparison. Still, I look at it every few weeks and add a new feature, and now I am mostly editing the code in the editor itself, which is gratifying.
I actually need to get off my duff and code what I really want, which is a version of what I remember the best parts of the Norton Editor implemented as an emacs mode. I have great memories of writing pascal code in ne.com, so it is a big nostalgia item for me.