A modification of Windows XP made by Enderman and Daniel Myslivets. As soon as Enderfags flooded CollabVM they attempted to install it on a VM inside the VM. This was so bad that even the Administrator of Endermans website had to block connections from CollabVM.
stas/CTAC is a rusko injoke that is best left unnoticed
on a side note: can you people stop vandalizing pages already