Another player for virtualization. Wondershare Time Freeze and its quick review of it is here. The article say that it is like a Returnil Virtual System. But the program have a ability to save changes from virtual environment to the actual. Its is sound like a Shadow defender. Easily switch from actual system to the virtual system without a reboot. But I doubt that you need to reboot if you change from virtual system to the actual system and drop the changes. But if its possible, its is like ShadowUser. No mention to exclude files and folders upon reboot. Other to consider maybe how fast it is that now slow down your machine that is very very important in our setup co-exist with the other security software. I think this have a potential in its kind. NOTE: WOT give the link a bad reputation. But the installer scan and it is safe. Only Norton react and based on the article, it is safe.