Whonix is an OS, a modern browser of your choice could be firefox.
Whonix runs TOR in a separate VM from your browser/user space. The idea is that even if you get hacked they don't get your IP address since they can only access the internet through the gateway VM that pushes all traffic through TOR.
I always wondered why they need whonix gateway? Couldn't they just pass it through host's tor? Why do i need to run entire full blown debian just as a proxy?
Whonix runs TOR in a separate VM from your browser/user space. The idea is that even if you get hacked they don't get your IP address since they can only access the internet through the gateway VM that pushes all traffic through TOR.