RVS 2008 Personal - free
RVS 2008 Personal is ideal for home users who wish to keep their
PC's integrity and security intact. There is no need to get a degree in
computer science while doing so. No matter how many different members
of your family use the computer, Returnil will ensure that all have
access to a new, clean system with each restart. Powerful
virtualization technology copies your system and lets you use the copy,
sparing your real system from wear, harm and viruses. Try out different
software, surf the web freely without any risks and consequences or let
your children run wild on your PC, all activity, malicious or
otherwise, will happen in the virtual environment, not in the real one,
so your system is safe.
System Protection Mode / Session Lock / Virtualization
Creates a virtual copy of your system
Session Lock let's you enable protection instantly
Choose to drop or save changes upon restart
Virtual Partition
Create and mount virtual partition
Saved files will stay after restart
Automount with each system start
Access Protection
Keep inexperienced users from making changes to your settings
Set custom password to lock the interface
Protection Scheduler
Automate your computer's protection
Schedule your protection to be on at specified times
Use case : Turn OFF protection when updating Windows etc
http://www.returnilvirtualsystem.com/returnil-virtual-system-personal