And for the others no links or clues as to what desktop environment or window manger is used, nor what theme, background, or distro ... basically some eyecandy with no content.
1. Not real.
2. Mac4Lin.
3. Not absolutely clear, but note that thunar's internal menus are displayed in the toolbar instead of the window, like a mac. It could be Mac4Lin again, but I'm guessing it's not real, unless there's something about thunar I don't know.
4. Enlightenment.
5. Pekwm.
6. Enlightenment.
7. Could be anything. It does have a Gnome footprint on the bottom right, though, so I'd guess metacity.
8. Fluxbox. (yay!)
9. I'm not sure. Probably compiz-fusion.
10. Could be anything.