I've just had a look what is on my SUSE disk. At a quick glance, NoteEdit looks an interesting graphical program worth investigating BUT.

1. The status of it seems a bit weird at the moment (http://rnvs.informatik.tu-chemnitz.de/~jan/noteedit/discont.html>see here).

2. It's seems to require KDE <4 . Ubuntu uses Gnome and I'm not sure it's easy to have it use KDE. They actually have a separate kbuntu project.