With regards to Windows 7:
We have DeskScapes 8 in development (which works great on Windows Vista/7/8). WindowFX 5 was released recently which is pretty awesome. Fences 2 of course is extremely popular and was just released. And of course, there's one of my personal favorites, Tiles.
We also released Multiplicity 2 recently which lets you take two local machines and use them together as one (you can even drag and drop files between them as if the other machine was just a secondary monitor).
Plus, if you're an a former OS/2 user, you can probably appreciate our most popular desktop enhancement of all time -- WindowBlinds which was recently updated.
So sticking with Windows 7, which millions are, doesn't mean we go separate ways. I'm typing this on a Windows 7 box.