Hi Lupa,
Poser is there, under the application specific stuff (specifically, it's called "e-frontier Poser").
I want to avoid having an "others" section, but maybe I'll have a "brushes" section. Or maybe we should start a whole new site just for 2D? We'll look into it.
One of the challenges is that the top navigation bar is really cramped for space... so we have to be really careful of what we choose to put up there. Perhaps if we hear a lot of people wanting to put up that stuff, we'll add it.
-Jake