Whonix is a desktop operating system designed for advanced security and privacy. It realistically addresses attacks while maintaining usability. It makes online anonymity possible via fail-safe, automatic, and desktop-wide use of the Tor network. A heavily reconfigured Debian base is run inside multiple virtual machines, providing a substantial layer of protection from malware and IP leaks. Pre-installed, pre-configured applications are ready for use, and installing additional applications or personalizing the desktop will in no way jeopardize the user.
More info on Whonix: WhonixWhonix is the only actively developed OS designed to be run inside a VM and paired with Tor.
Download: Whonix - Download