if you're looking for loaded features then I recommend Quanta
....
but seriously, I don't think it's any trouble at all to ctrl -S and
then refresh them on browsers ....
cos as you know, sometimes things will go kuku on different
browsers .... especially if you throw in style sheets and
javascripts or something ...
so what I'll do is I'll have the file up on different browsers and
refresh each one to see if everything turns out okay ... I still
love kate though, it's pretty minimalist .... and that's how I like
it, I use it for everything from C to prolog ... 
