Privacy tools
Do not track plus for chrome: prevents most companies from tracking you online and lets oyu know when your being spied on -->https://chrome.google.com/webstore/detail/epanfjkfahimkgomnigadpkobaefekcd <--
Dissconect: for chrome: stops major browsers from spying on you --> https://chrome.google.com/webstore/detail/jeoacafpbcihiomhlakheieifhpjdfeo <--
You will also want to consider an adblock, an anti-virus checker, proxies and a user agent switcher.
Browsers
Tor browser:this is the best anonymity device known to man(except maybe the Guy Fawkes mask) -->
https://www.torproject.org/ <--
Comodo Dragon:security enhanced browser based on the chromium project. Is basically a clone of Chrome but with extra security modifications. -->
www.comodo.com/home/browsers-toolbars/browser.php <-- (website is being watched by at least three companies)
Browser Tools
TamperMonkey: greaseMonkey scripts for Chrome (this has as many uses as you can find scrips for) --> https://chrome.google.com/webstore/detail/dhdgffkkebhmkfjojejmpbldmpobfkfo <--
Userscripts:good place to find GreaseMonkey scripts -->
http://userscripts.org/ <-- (watched by Qantcast, jest like this site)
Desktop Tools
Eraser: actully deletes files instead of hiding them. makes it so the data cant be recovered off your machine -->
http://eraser.heidi.ie/<--
TrueCrypt:a file and hard drive encryption program. good quality but not immune to extreme techniques such as a cold boot. -->
http://www.truecrypt.org/<--
Virtual box: allows you to run other Operating Systems in a program on your computer. its like inception but with computers instead of dreams -->
https://www.virtualbox.org/<--
Operating systems for you to run in VB: Ubantu and fedora are your best choices for a "normal" desktop. most oter linux based OS are less user friendly. haiku and ReactOS are worth your time to check out. thay are designed to be compatable with BeOS and Windows respectivly --> http://virtualboxes.org/images/ <--
Mind tools
Gnaural: an opensource Binaurial beat geneorator -->
http://gnaural.sourceforge.net/<--