Whonix is a complete operating system, designed to be used inside a host operating system. It is Free Software and based on Tor, Debian GNU/Linux, and security by isolation. Whonix aims at preserving your privacy and anonymity by helping you use your applications anonymously. A web browser, IRC client, word processor, and more come pre-configured with security in mind.
Whonix is divided into two parts: Workstation for your work and Gateway for automatically routing all internet traffic through Tor. This is security by isolation, and it averts many threats posed by malware, misbehaving applications, and user error.
Read more and download Whonix version 9 from here - https://www.whonix.org/blog/