Tor Browser is described as 'The Tor software protects you by bouncing your communications around a distributed network of relays run by volunteers all around the world: it prevents somebody watching your Internet connection from learning what sites you visit, it prevents the sites you visit from learning' and is a leading Web Browser in the security & privacy category. There are more than 50 alternatives to Tor Browser for a variety of platforms, including Windows, Mac, Linux, Android and iPhone apps. The best Tor Browser alternative is Brave, which is both free and Open Source. Other great apps like Tor Browser are Mullvad Browser, Helium Browser, IronFox and Orbot.
Thorium is just a fork of Chrome. It doesn't provide a connection over Tor or any real privacy protections.
Also something weird about a suggestive furry easter egg.