AVG Anti-Virus Free Edition
Anti-virus scanner

AVG Anti-Virus FREE Edition is the well-known anti-virus protection tool. AVG Anti-Virus 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.
Features
Rapid virus database updates for the lifetime of the product
Easy to use
No system slow down
Automatic update functionality
The AVG Resident Shield, which provides real-time protection as files are opened and programs are run
The AVG E-mail Scanner, which protects your e-mail
The AVG On-Demand Scanner, which allows you to perform scheduled and manual tests
The AVG Virus Vault for safe isolation and handling of infected files
And most of all ... great customer satisfaction!

Last Updated 25 April 2008
Win 98/ME/2000/XP/Vista
Linux

avast 4 Home Edition
Anti-virus scanner

avast Home Edition is a complete anti-virus package, that is is free for registered home non-commercial users. It contains an on-demand scanner with two interfaces (simple for novices and advanced for experienced users), an on-access scanner with Standard Shield (which protects against execution and opening malware programs) and an embedded e-mail scanner which scans incoming and outgoing email messages.

avast! Home integrates with the Windows Explorer right click menu and also includes a special screen saver which is able to scan your system while your computer is not in use.

Updates are incremental and frequently made available for manual or scheduled download. You will download a 60 days demo, if you would like to continue free usage beyond that time, you`ll need to register from the home page to obtain a free activation key by email.

Last Updated 04 April 2008
Win 98/Me/NT/2000/XP/2003/Vista

ClamAV For Windows
Anti-virus scanner

ClamAV For Windows is a Windows command line version of the GPL licensed anti-virus solution. It includes a set of command line tools, including a high speed scanning daemon, that can be used to scan computers for viruses, or used by mail servers or proxy servers (via command line) to clean incoming messages. The program offers free definition updates and comes with detailed (PDF) documentation. Suited for advanced users only.

Last Updated 12 January 2008
Win 98/Me/2000/XP/2003

AntiVir Personal Edition
Anti-virus scanner

AntiVir PE (Personal Edition) offers the effective protection against computer viruses for the individual and private use on a single PC-workstation. It detects and removes more than 50,000 viruses and an Internet-Update Wizard for easy updating. The built in resident Virus Guard serves to monitor file movements automatically, for example when downloading files from the internet. Heuristic scanning protects Protection against previously unknown macro viruses.

Last Updated 16 April 2008
Win 2000/XP/Vista

BitDefender Free Edition v10
On demand anti-virus scan

BitDefender Free Edition is your chance to use one of the world's most effective antivirus engines for free!

BitDefender Free Edition uses the same ICSA Labs certified scanning engines found in other BitDefender products, allowing you to enjoy basic virus protection for no cost at all.

BitDefender Free Edition is an on-demand virus scanner, which is best used in a system recovery or forensics role.

Virus scanning and removal
On demand scanning - Powerful scan engines ensure detection and removal of all viruses in the wild every time you need it.

Scheduled scanning
The Scheduler lets you plan ahead, and schedule full system/drive scans in the off hours, when you won’t be using your computer.

Immediate scanning
With just a right click you can check your files and folders.

Skinable interface
You can express yourself, designing new interfaces, or you can use those drawn by others.

Quarantine
By isolating the infected files in quarantine, the risk of getting infected diminishes. You also have the possibility to send these files for further analysis to BitDefender Labs.

Reports
When launching a scan you may choose to create a report file where you can see statistics about the scan process

Last Updated 5 September 2007
Win 98/ME/NT/2000/XP

McAfee Free Scan

Online Scan
McAfee FreeScan helps you detect thousands of viruses on your computer. Based on the award-winning McAfee VirusScan engine, FreeScan searches for viruses, including the latest known "in the wild" viruses, and displays a detailed list of any infected files. Should viruses be found, FreeScan even provides links to more information about the viruses and what you can do to clean your system.
Win 95/98/Me/NT/2000/XP

Trend Micro

Online Scan
HouseCall is a demonstration of the power of Web-based technologies that Trend Micro is developing to make deployment and management of virus protection in corporate settings fast and easy. Check for latest virus alerts
Win 95/98/Me/NT/2000/XP

ClamWin Free Antivirus
Anti-virus scanner

ClamWin Free Antivirus is a free antivirus for Windows. It provides a graphical user interface to the Clam AntiVirus engine.

Features:
High detection rates for viruses and spyware;
Scanning Scheduler;
Automatic downloads of regularly updated Virus Database.
Standalone virus scanner and right-click menu integration to Microsoft Windows Explorer;
Addin to Microsoft Outlook to remove virus-infected attachments automatically.

Last Updated 23 January 2008
Win 98/Me/2000/XP

a-squared Free
Adware and spyware scanner

a² is a complementary product to antivirus software which is specialized in protection against harmful software. Antivirus software often features an inadequate protection against Trojans, Dialers and Spyware. a² fills this gap.

Remove infections of Trojans, Spyware, Adware, Worms, Keyloggers, Rootkits, Dialers and other malicious programs.
4 million users world wide rely on a-squared to clean their PC from Malware.
Remarkable easy to use and completely free or charge.

Last Updated 14 April 2008
Win 2000/XP/2003/Vista

Panda Quick Remover
Specialized virus removal

This tool from panda Anti-Virus automatically repairs infections of "popular" worms and viruses and restores original system and registry configuration. Panda Quick Remover can currently detect and remove the following infections: BADTRANS, VOTE, SIRCAM, ANNA KOURNIKOVA, HELP, KAK WORM, NAVIDAD, SHELL SCRAP, KLEZ, NIMDA, FUNLOVE, COOL NOTEPAD, I LOVE YOU, MATRIX, PRETTY PARK, VERONA.
Win 95/98/Me/NT/2000/XP

Comodo AntiVirus

Eliminates Viruses, Worms and Trojans from desktops and networks
Detects and eliminates viruses from desktops and networks
Constantly protects with real-time On Access scanning online
Proactive Heuristic analysis intercepts unknown threats
Daily, automatic updates of virus definitions
Isolates suspicious files in quarantine preventing infection
Simple to use: install and forget
Win 2000/XP

PC Tools AntiVirus Free Edition
Anti-virus scanner

With PC Tools AntiVirus Free Edition you are protected against the most nefarious cyber-threats attempting to gain access to your PC and personal information. Going online without protection against the latest fast-spreading virus and worms, such as Netsky, Mytob and MyDoom, 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 email contacts and networked PCs. The infection may also allow hackers to access files on your PC, use it to launch attacks against other computers and websites or to send mass SPAM email.

That's why PC Tools AntiVirus Free Edition provides world-leading protection, with rapid database updates, OnGuard™ real-time protection and comprehensive system scanning to ensure your system remains safe and virus free. PC Tools products are trusted and used by millions of people everyday to protect their home and business computers against online threats.

Updated 17 December 2007
Win 2000/XP/2003/Vista

MicroWorld Anti Virus Toolkit

Scans your computer completely and provides reports of any viruses that it finds.
Checks for all illegal dialers that are present on your computer and informs you of the same.
Informs you of any background illegal sniffers or tools like spywares, adwares, keyloggers etc. running in the memory of your computer.
You can add this utility to the startup list of programs on your computer so that it scans your computer every time you start using it.
When you download this utility you will get it with the latest updated list of viruses so that it scans your computer for all known viruses.
Win 98/Me/NT/2000/XP/2003

Repellent

Do you use a virus scanner before opening your email? Do you run a virus scanner while you're surfing or reading your email? All this takes time and slows your machines down; and a virus scanner may spot a virus, but it may have already started infecting your machine. If your virus definitions are out of date or if the virus is a brand new virus your virus program will not be able to help you.
Your virus scanner and firewall cannot stop a script on a page you are viewing from changing your Internet setting or your home page. Repellent can!
Win 95/98/Me/NT/2000/XP?2003

Multi Virus Cleaner
Detect and remove major viruses

Multi Virus Cleaner is a free, stand-alone utility used to detect and remove major viruses. It is not a substitute for full anti-virus protection, but rather a tool to assist administrators and users when cleaning infected systems.

Multi Virus Cleaner is regularly updated and can detect over 6,000 common viruses, worms, trojans and dialers (including all variants of the Sober, MyDoom and Bagle viruses).

The program boasts a fast, user-friendly scanner that requires minimal processing power and is an excellent choice for repairing a compromised system.
Win 98/ME/NT/2000/XP/Vista