AVG Anti-Virus Free on Home Users we recommend using AVG over Norton and McAfee. It finds more viruses and it doesn't make your computer run slow, or block things you use on a normal basis. We personally use this for all of our computer systems at the shop, and in our homes.
Super Anti-Spyware FREE Software will detect and remove thousands of Spyware, Adware, Malware, Trojans, KeyLoggers, Dialers, Hi-Jackers, and Worms. SUPER AntiSpyware removes spyware threats that other applications fail to.
Malwarebytes Anti-Malware Free utilizes Malwarebytes powerful technology to detect and remove all traces of malware including worms, trojans, rootkits, rogues, dialers, spyware and more.