"Hyperspace has a neat feature for machines with hardware
virtualization that should really appeal to the productivity
conscious. It will boot a host operating system, such as Windows
Vista, behind the scenes while you use the Hyperspace environment
and allow you to switch over to it once it has finished booting.
Now you can actually do something productive while you wait for
Windows to boot. One of the biggest differences in the two products
is price. For starters, you can't buy Splashtop except as a part of
a motherboard from Asus or a full up system."