The Mullvad Browser is a privacy-focused web browser developed in collaboration with Mullvad VPN and the Tor Project. It aims to eliminate data collection and provide user-centric browsing services, ensuring online activity remains private and secure. The browser has the same fingerprinting protection as the Tor Browser, but connects to the internet without Tor Network or VPN instead. The Mullvad Browser provides anti-fingerprinting protections.
The idea is to provide one more alternative – beside the Tor Network – to browse the internet with more privacy. To get as many people as possible to fight the big data gathering of today. To free the internet from mass surveillance.
Here: >> mullvad browser official <<
Addons yes. But hardened means changing the user.js with arkenfox as base or simply use that premade hardening. Mullvad Browser is nothing but Firefox+arkenfox+fancy UI and no Flatpak available.
Other vectors are fonts, which only work in the Tor browser bundle I think, to really fake being on Windows.
NoJSFingerprint using CSS is also still possible, a way to detect your OS. this is the same on all Browsers.
Just do a Fingerprint Test:
Is the other Browser better? No, you will have less privacy protection.