Security starts with free software: if the software is not free, the user is
helpless against the (real) owner of the software. Users of proprietary
software are *often* abused. It is not a theoretical risk:
http://gnu.org/proprietary
I start with that point because you actually list two proprietary add-ons to
the Web browser: Ghostery and ZenMate. I use many free add-ons (they must
certainly overlap and some probably are totally useless given the others) to
not be tracked when I use Abrowser (Trisquel's default browser, based on
Firefox): Clean Links, Decentraleyes, HTTPS-Everywhere, Privacy Badger,
Random Agent Spoofer, RedirectCleaner, Self-Destructing Cookies, ShareMeNot,
Smart Referer, and uBlock Origin.
But the best solution to anonymously (although more slowly) browse the Web is
the Tor browser, like root_vegetable wrote. However, he did not give you the
best link. Here it is: https://www.torproject.org/projects/torbrowser.html.en
