Best Free:-Virus:
(Only one please, I will list in order of my likeness)Avast!
http://www.avast.com/free-antivirus-downloadAVG Free
http://free.avg.com/ww-en/download?prd=afgAvira AntiVir
http://www.free-av.com/en/trialpay_download/1/avira_antivir_personal__free_antivirus.html-Spyware:
(Both can be downloaded if necessary) Spybot Search and destroy
http://www.safer-networking.org/en/mirrors/index.htmlSuperantispyware
http://www.superantispyware.com/download.html-Firewall:
(Only one please, I will list in order of my likeness)Zone Alarm
http://www.zonealarm.com/security/en-us/zonealarm-pc-security-free-firewall.htmComodo
http://www.comodo.com/home/download/download.php?prod=firewall----------
Best Pay:Eset NOD32 Smart Security
(My personal favourite
) http://www.eset.com/purchase/Kasperspy
http://usa.kaspersky.com/products_services/HomeProducts.phpOther free goodies:CCleaner (Cleans temporary data, history and other options. Also a registry cleaner.
http://www.ccleaner.com/downloadAvoid:Norton
Windows Defender
Tip: You only need one firewall and antivirus. Such programs usually conflict with each other so your not effectively doubling your protection... The Pay to use programs above are usually 3 in 1, like ESET Smart Security. Its AntiVirus, Anti Malware and a firewall, so thats all you need! I use that suite and CCleaner. Never been infected once in years. It auto detects programs that try to change settings on your computer before such a virus is even listed in the virus database. It then calls home and they can determine if its an attack program and then send out an update to everyone. Good system, low resource, good UI.
So whats the best defence of all?
You are. Browse safe, don't go to sketchy websites and download everything from everywhere! Clear your cookies and other temp web browsing data. Get a password on your wireless networks.
KEEP THINGS UP TO DATE!!! WINDOWS, YOUR BROWSER, JAVA, ANTIVIRUS BEING TOPS!!!