What all the above sandbox apps do is generally known as light virtualization. When in Shadow Mode, if you want to save a downloaded file or commit to a system change, all you have to do is click on the “Commit Now” button in the main window. This lets you pick and choose which changes to keep and which changes to discard. Of course, you can always specify files and folders to exclude from Shadow Mode. All you have to do is select “Sandbox -> Default Box -> Run Sandboxed -> Run Web browser.” If you want to run any other application, select “Run Any Program.” Besides installing software inside Sandboxie, you can run any already installed program, like your web browser, via Sandboxie. You can install and run almost any Windows software through Sandboxie. Two great aspects are that Sandboxie is very lightweight and free. Sandboxie is one of the most popular and most used applications to sandbox and isolate programs from the underlying Windows operating system. Related: 12 Safe Websites for Downloading Windows Software 4. Everything you run through it becomes “read-only,” so no nasties can write themselves onto your hard drive. Keeping your chosen activities in a secure Virtual Zone, BufferZone makes it impossible for web-based malicious software to get onto your PC. One advantage of this over other sandbox software is that you don’t need to do much tinkering to get it up and running.