Well, since you have reached this Site on Antivirus, you are already aware of what is Anti Virus and why do we all need Virus Protection. I have done some research on Free Antivirus Software available for download and mention them here for all of you. While some of the mentioned Antivirus Software are Completely FREE, other are for trial program. Several of them can also be found through searh on Search Engines.

I personally prefer Avast and AVG for Antivirus Protection for my computer. You may download free antivirus software and install. For complete virus protection you should always scan you computer from time to time for security.

Here are all the Free Antivirus Software for Download for the Protection and Security of your computer:

AVG Free Edition is the well-known antivirus protection tool. AVG Free is available free of charge to home users for the life of the product. Rapid virus database updates are available for the lifetime of the product, thereby providing the high level of detection capability that millions of users around the world trust to protect their computers. AVG Free is easy to use and will not slow your system down (low system resource requirements. Highlights include automatic update functionality, the AVG Resident Shield, which provides real-time protection as files are opened and programs are run, free Virus Database Updates for the lifetime of the product, and AVG Virus Vault for safe handling of infected files.

AVG Free - Download AVG Anti-Virus Free Edition for Windows XP and Vista

Avast Home Edition is a complete ICSA & Checkmark certified antivirus, Checkmark certified anti-spyware & anti-rootkit package. Avast includes the following components: On demand scanner with skinnable simple interface, just select what do you want to scan in which way and press the Play button; On access scanner, special providers to protect the most of available e-mail clients; Instant messaging-ICQ, Miranda; Network traffic-intrusion detection, lightweight firewall; P2P protection for Kazaa, BitTorrent; Web shield--monitors and filters all HTTP traffic; NNTP scanner--scans all Usenet Newsgroup traffic and all operations with files on PC; Boot time scanner--scans disks in the same way and in the same time as Windows CHKDSK does.

  avast! 4 Home Edition - FREE antivirus software - Download

Avira AntiVir Personal - Free Antivirus is a comprehensive, easy to use antivirus program, designed to offer reliable free of charge virus protection to home-users only. Avira offers: Extensive Malware Recognition of viruses, Trojans, backdoor programs, worms, etc. Automatic incremental updates of antivirus signatures, engine and entire software. Permanent virus protection, with Virus Guard real time monitoring. Install and configuration in just a couple of steps. Virus protection against known and unknown threats, using an advanced heuristic system. Scheduler where you can set the scanner to make automatic virus scans or updates on your system. Forum and phone support, Knowledge Base with virus descriptions available on Web site. Rootkit Detection and Removal. Version 8.2.0.334 includes new Virus Engine update.

Download Avira AntiVir Personal - FREE Antivirus

Norton AntiVirus 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. The new Norton Insight relies on extensive online intelligence to target only those processes at risk, resulting in faster, shorter, fewer scans. And the new Norton Protection System employs a multilayered set of security technologies that work in concert to detect, identify, and block attacks. Version 2009 improves on product performance.

Download Norton Antivirus

Note: The Download Now link will direct you to the developer's site where you'll be asked to provide your e-mail address to download a file.

Antivirus, anti-spyware, anti-spam, firewall. Protect yourself with Panda Security. Protection against viruses, spyware, Trojans, hackers, spam and other Internet threats. Antivirus and anti-malware for home users and companies.    Free online antivirus. Download ActiveScan 2.0 and clean your PC. Panda Security

Antivirus & Spyware, Corporate Security Software, Encryption Software, Firewall Software, Monitoring Software, Popup Blocker Software, Privacy Software, Spyware Removers, security software, Spyware Killers Include:     Ad-Aware : Spyware Removers

Malwarebytes' Anti-Malware : Spyware Removers

Spybot - Search & Destroy : Spyware Removers. Search your hard disk and Registry for threats to your security and privacy.

CCleaner: Privacy Software

RoboForm : Encryption Software. Reduce your many passwords to just one; enjoy easy, one-click logins and form filling

SpywareBlaster : Spyware Removers

Trend Micro HijackThis: Spyware Removers.

ZoneAlarm Firewall (Windows 2000/XP) : Protect your Internet connection from hackers and other security breaches.

Hotspot Shield: Maintain your anonymity and protect your privacy when accessing free Wi-Fi hotspots

ESET NOD32 Antivirus : Protect your system against viruses

Spyware Doctor : Remove spyware, adware, Trojan horses, and key loggers with this popular and fast utility.

Kaspersky Anti-Virus : Monitor and detect viruses and protect your PC from viruses, malware, and Trojan attacks.

PC Tools AntiVirus Free Edition : Protect your PC against viruses, worms, and trojans with rapid updates and IntelliGuard technology.

McAfee VirusScan Plus : Remove spyware or virus threats and prevent malicious applications from invading your PC.

ThreatFire AntiVirus Free Edition: Protect your PC against viruses, rootkits, buffer overflows, and malware.

Spyware Terminator : Protect your computer with free real-time detection of spyware, adware, and key loggers.

Webroot Spy Sweeper : Remove and block all types of spyware on your computer.

SUPERAntiSpyware Free Edition : Scan, repair, and protect your computer.

Online Armor : Protect your system from parasites, viruses, and identity theft while surfing the Web.

Comodo Firewall Pro : Protect your PC from harmful threats.

Folder Lock : Password-protect, lock, hide or encrypt files, folders, drives and portable disks in seconds.

Trojan Remover: Get rid of Trojan horse viruses.