Notepad++ comes most close to what i am looking for. The only thing which i don't like, is that for me personally, it contains many menu-options which i dont need. The "document" and "run" roots i could even completely do without. Well, needs of course differ, so it would be nice if the menus could be someway customizable. For me personally, they could even be just xml or textfiles which one can manually edit (and remove unwanted options). I've tried to find out if i could maybe find out where to change it in the source, but then figured out i would probably break more than i would fix ;)
issue solved. I found out that the english.xml file which originally was just intended for translation, can be used to do exactly what i want.
Maybe it would make sense, to mention this possibility on the homepage, in case others would like to customize their menus.