Whonix is a security-focused operating system designed to be used within a host operating system. It uses Tor and virtualization to isolate and route all internet traffic through the Tor network for anonymity online. Whonix consists of two virtual machines - a Whonix Gateway that routes traffic through Tor, and a Whonix Workstation for applications. This isolation architecture enhances privacy and security by preventing leaks of the user's real IP address or system information when browsing or using applications. Whonix provides anonymity, privacy, and anti-censorship benefits to users.