Firefox, at least modern versions of it, does not tell Google which sites you're visiting. It pulls a list from Google and checks against it: https://en.wikiped

Firefox, at least modern versions of it, does not tell Google which sites you're visiting. It pulls a list from Google and checks against it: https://en.wikipedia.org/wiki/Google_Safe_Browsing https://en.wikipedia.org/wiki/Google_Safe_Browsing And Firefox enables you to turn this off in settings. Firefox's telemetry can also be turned off. In fact, when you install Firefox, it asks you if you wish to enable it. And regarding the plugins ecosystem, Firefox is moving away from the old XUL/XPCOM extension model towards WebExtensions, which should be better here.