Firefox’s free VPN will offer 50 gigabytes of monthly data, which is pretty generous for a browser-based VPN. A Mozilla account is required to make use of it, which isn’t a hardship (they’re free), but is a point of friction some may wish to know upfront.
Other vpns aren’t integrated into your browser that you’re globally logged in into.
Nah just integrated in your machine
I mean, depending on the word integrated. Everything is integrated in a sense. But it’s harder to be more integrated than being literally the same app.