At work I have the most horrible setup:
I run Windows NT, w/ Exceed. Exceed is a client to log onto and browse a UNIX server. But it's very difficult to transfer files from Exceed to Windows, so I have to do all the editing using the default editor (Text Editor), which is a GUI wrapped around emacs or vi or something like that. For previewing I use IE, which is the Devil incarnate...
MrToast