Sophos Virus Removal Tool is a free application for running on-demand antivirus scans on your PC. You can’t tell the program what to scan; there’s no need to choose a scan type; and you can’t schedule scans to run unattended. Allow the program to remove anything it finds.
Norton Safety Minder is free tool that will help you monitor and restrict your child’s online activity. It lets you keep an eye on, and manage your kids’ online activities. Norton Online Family plugs you into your child’s online life. You can configure options you would like to use.

Kaspersky Anti-Virus 2012 is the new anti-virus introduce by Kasperskey for the PC’s security system, delivering real-time protection from the latest malware and viruses. It works behind the scenes with intelligent scanning and small, frequent updates. It provides 30 days free trial.
SUPERAntiSpyware is a software application which can detect and remove spyware, adware, trojan horses, rogue security software, computer worms, rootkits, parasites and other potentially harmful software applications. Although it can detect malware and not designed to replace antivirus
Norton Bootable Recovery Tool Wizard is a disaster recovery tool that can boot unbootable PC. Download this via another system, and it’ll quickly create a CD, DVD or USB flash drive containing stand-alone Norton antivirus tools. Boot stricken PC and it’ll scan for infections