Firefox add-ons that protect your privacy on the Web. Also a must-have: HTTPS Everywhere
Adblock Edge is a fork of the Adblock Plus version 2.1.2 extension for blocking advertisements on the web, without sponsored ads whitelist.
**This addon will be discontinued on June 2015**
'Super-Cookie' Daten Schutz (LSO Flash Objekte, eBay Langzeitverfolgung)
6.506 Downloads pro Woche
DuckDuckGo is the search engine that doesn't track you. We also have smarter answers and less clutter. This extension adds DuckDuckGo (HTTPS / SSL version) to the search bar. For more features, see the DuckDuckGo Plus add-on. Enjoy!
Send referers only when staying on the same domain.
You can whitelist domains with wildcards and configure other things, look in the preferences page of the addon in the addon manager.