Something I tried to do by myself - but seems to have too little knowledge:Notes outliner (or notes manager).
There are lots of this kind (see http://www.outlinersoftwa...t/807/0/list-of-outliners
Still, they are mostly a huge pile of tree structure, difficult to manage. It hit my mind that maybe the keyword navigation on FARR can do better.
I personally tried to embed an IE based HTML editor (there are many free ones on the WEB) in the "igo" window. I even managed to be able to save the file, but to load it is another thing (from FARR command line). Seems that any real programmer can do better than me.
It is an idea, I wonder if doable at all.