BitBlinder aims to preserve your privacy and keep your IP address safe from them. It also allows you to avoid most restrictions and filters on you Internet access. BitBlinder supports both BitTorrent and normal web traffic, with more applications coming soon.
Manage your tabs in sandboxes increasing your privacy!
Cookies when you need them, not when others need them to track you - gets rid of a site's cookies as soon as you close its tabs.
SquiggleSR is a Firefox plug-in which generates personalized queries to search engines to confuse search engines and protect user’s privacy. User favorites RSS flows and search engine statistics are used to create coherent and news related queries.
Torbutton provides a button to easily enable or disable the browser's use of Tor.