HijackThis lists the contents of key areas of the Registry and hard drive--areas that are used by both legitimate programmers and hijackers. The program is continually updated to detect and remove new hijacks. It does not target specific programs and URLs, only the methods used by hijackers to force you onto their sites. As a result, false positives are imminent, and unless you're sure about what you're doing, you always should consult with knowledgeable folks before deleting anything. Version 2.0.2 includes unspecified updates.

Norton AntiVirus 2009 provides fast, responsive defense against all types of malicious software including viruses, spyware, worms, and other software threats. It protects your system without slowing it down. Rapid pulse updates every 5 to 15 minutes help to ensure that you're protected from the latest threats. Working quickly and quietly in the background, Norton AntiVirus requires little memory and system resources.

Built on the award-winning ThreatSense engine, ESET NOD32 Antivirus proactively detects and disables more viruses, trojans, worms, adware, spyware, phishing, rootkits and other Internet threats than any program available. ESET NOD32 Antivirus provides: 1) Proactive Protection - multiple layers of detection protecting you from Internet threats before it is too late. 2) Precise Detection - accurately identifies known and unknown threats; it consistently wins top awards from testing labs and is recognized for having zero false positives. 3) Lightweight Design - requires less memory and CPU power, allowing your computer to run fast and have more room for games, web browsing, and emailing. 4) Fast Scanning Speeds - highly efficient program ensures fast file scanning and product updates; it runs quietly in the background.

PC Tools AntiVirus Free Edition protects you against the most nefarious cyber-threats attempting to gain access to your PC and personal details. Going online without protection against the latest fast-spreading viruses, worms and Trojans can result in infections within minutes. Once infected, the virus will usually attempt to spread itself to your friends, family and associates by accessing your e-mail contacts and networked PCs.

McAfee VirusScan Plus offers proactive PC security to prevent malicious attacks, so you can protect what you value as well as surf, search, and download files online with confidence. McAfee SiteAdvisors Web safety ratings help you avoid unsafe Web sites. This service also provides security against multi-pronged attacks by combining antivirus and antispyware technologies. McAfees security service continuously delivers the latest software so your protection is never out-of-date. You can now easily add and manage security for multiple PCs in your home. Moreover, improved performance allows it to protect, without disturbing you.

Avast 4 Professional Edition is a complete ICSA & Checkmark certified antivirus, Checkmark certified anti-spyware & anti-rootkit software package for corporate and advanced home use. avast Professional Edition includes an on demand scanner with two user interfaces, a skinnable simple interface: just select what you want to scan and in which way and press the play button, an enhanced user interface: Outlook like UI allows users to set any feature of Avast, prepare and run tasks, store and check task results, on access scanner: special providers to protect: most available e-mail clients, instant messaging: ICQ or Miranda, network traffic: lightweight firewall, P2P protection for Kazaa, BitTorrent, Web shield: all HTTP traffic, script blocker. avast Professional Edition is available in 32 languages. Small, true incremental, updates are downloaded and installed automatically.

This improved easy-to-use solution provides complete antivirus protection that allows you to surf the web safely and keeps your PC free of viruses, Internet and email worms, and Trojans.

avast! antivirus Home Edition is FREE to use but it is necessary to register before the end of the initial 60 day trial period.

Free and safe AVG Anti-Virus Free Edition downloads. Protect your computer from viruses and malicious programs.