Shadow Defender 

Shadow Defender is intended to protect your system from the action of various types of malware, which alter disk contents and change system settings without your consent. The tool works by loading a clone of your system on a contained disk and memory space. This way, all changes are automatically reverted when you abandon the program and, consequently, cannot affect the system.

The tool has a straightforward interface. Its basic operation of creating a sandbox, which is called “shadow mode” here, is quite simple. A single mouse click can start it without much trouble. Not only that, you can fully automatize the operation by setting shadow mode to start along with the system.

At this point, you may be wondering what if you want to preserve some changes, like those made to a text file. In such cases, it is excellent that you can create exclusion lists, comprising selected folders, files, and even registry entries. Another possibility is to press the button Commit to save the changes made to a given file.

To conclude, the program works stably and without adding any considerable strain to your computer. It is ideal for computers intended for public use, such as those in schools and Internet cafes, as it ensures that the system remains untouched. The product is shareware and can be tried for thirty days. However, I must alert you that you can find similar features in other tools available for free.