Avast - ALWIL Software - avast! complete anti virus protection for all computers with a fast incremental update. Several versions available - Home, Professional, Network, Enterprise, Groupware, and Firewall edition. We use this one at home and we can recommend it. The program is free for non-commercial (home) users and it updates its virus database automatically. Download home user version here. This is not an affiliate link, we recommend this product because we believe in it and trust it to protect our computers at home.

McAfee Virus Information   - Virus alerts, mailing list, and searchable descriptions of common viruses.

Symantec AntiVirus Research Center   - Virus Encyclopedia site maintained by Symantec, makers of the popular Norton AntiVirus product.

Antivirus World - Antivirus news, information, online tests, and useful downloads.

AskMen.com - How To: Keep Your Computer Virus-Free - Article with basic advice on virus prevention, and a primer on computer virus terminology.

Burton Systems Software - Virus Avoidance Advice - Advice for avoiding and recovering from computer virus infections, mostly for users of Microsoft Windows. Includes links to many free tools and other resources.

CIAC Virus Database - No longer actively maintained. Detailed information on a number of older computer viruses, particularly for more obscure platforms.

Computer Associates Virus Encyclopedia - Computer Associates alphabetical virus database. Searchable with clear descriptions of common viruses.

Computer Associates Virus Information Center - Virus information from makers of e-Trust Antivirus (formerly known as InoculateIT).

Computer Virus Myths - The canonical reference for computer virus myths, hoaxes, and urban legends.

Computer Viruses In Unix Networks - Paper which examines in detail the problem of computer viruses as they relate to Unix and Unix-like systems.

comp.virus Newsgroup FAQs - FAQs from the comp.virus newsgroup

davebauer.net - Avoiding Viruses - Information to help computer users learn how to protect computers from viruses and hackers.

Doug Muth's Anti-Virus Help Page - Independent site with extensive FAQs, papers, and other antivirus resources.

EICAR test file - Provides a standardized test file for signature based virus detection software. This file can be used to verify the correct operation of antivirus software without unnecessary exposure to viruses.

European Institute for Computer Anti-Virus Research (EICAR) - Combines universities, industry, media, technical, security, and legal experts from civil and military government and law enforcement as well as privacy protection organizations whose objectives are to unite non-commercial efforts against writing and proliferation of malicious code like computer viruses or Trojan Horses, and against computer crime and fraud.

Examples of Malicious Computer Programs - Long essay that describes harm done by major computer viruses or worms, and discusses the nonexistent or lenient punishment for the authors or distributors of these malicious programs.

Fire Antivirus Kit - Virus Information Library - Provides detailed information on viruses

F-Secure Virus Information Centre - A searchable database of virus descriptions, from the provider of F-Secure range of anti-virus software.

#hackfix project - software configuration guides - Configuration guides for many popular antivirus and antitrojan packages

History of Computer Viruses - A technically oriented history of computer viruses by Robert M. Slade.

How Stuff Works: Computer Virus - Multipart tutorial describes how computer viruses work.

IBM's Antivirus Research - News and information about virus prevention, the latest in IBM's research, virus alerts, and lists of the latest hoaxes and hype.

Lets have fun with EICAR - Article showing how to test the effectiveness of anti-virus heuristics using modifications of the EICAR test file.

OpenAntiVirus Project - Project aimed at developing open source antivirus software comparable to current commercial offerings.

Panda Software Virus Laboratory - Up to date and in-depth descriptions of the most common viruses by Panda Software, makers of Panda Antivirus Platinum.

Personal Home page - Ferrie, Peter - Various research papers on computer viruses

Personal Home Page - Gordon, Sarah - Various papers on computer viruses, computer security, and ethics.

Personal Home Page - Harrold, Robert - Massive collection of antivirus links and news.

Personal Home Page - Szor, Peter - Research papers on computer viruses written by Peter Szor. The site covers Windows viruses and worms and the development of polymorphic and metamorphic viruses.

RAV Virus Encyclopedia - Virus Encyclopedia provided by RAV - Reliable AntiVirus.

Secunia - Virus Information - Collects virus information from multiple anti-virus vendors, and the collected information is grouped and indexed. When certain conditions are met virus alerts are generated and can be emailed.

Softpanorama University Skeptical Antivirus page - A skeptical look at anti-virus protection.

Solo Antivirus - Virus encyclopedia - Contains details about latest virus alerts and wide spread virus information.

Sophos Virus Analyses - This Sophos database holds the latest virus names and descriptions.

Team Anti-Virus - An organization for independent anti-virus researchers to facilitate communication, collaboration, and public education. Publishs and links to many papers written by independent researchers.

TestVirus.org - Tool to automatically send EICAR test files in various formats to a given email address.

Trend Virus Encyclopedia - Trend Micro issues regular advisories regarding new viruses, including a guide to avoiding them in the first place. Site covers risk factor of the newest viruses. lists top ten virus and offers a security alert archive.

Virus Bulletin - News and technical articles on developments on viruses and anti-virus products.

Virus Bulletin - Independent Anti-virus Advice - Independent anti-virus journal and website with advice, reviews and tutorials

Virus Information Library and Search - Database of viruses for research and informational purposes

Virus or Hoax? - Created to provide basic information about viruses. Links to major anti-virus companies, public services, software downloads, and updates.

VirusList.com - Permanently replenishing information about new viruses. Mechanisms of breeding and operation, detailed analysis of algorithms of viruses. Methods to guard against computer viruses.

The WildList Organization International - Organization which maintains a fairly comprehensive list of computer viruses which are still found "in the wild".

Windows Startup Tasks - Massive listing of tasks that may be running on a Windows system at startup, including tasks which may be created by viruses, worms, spyware, and trojans

Anti Virus products

Abtrusion Protector - Protection against viruses by preventing unrecognized software from executing on your computer.

Alt-N Technologies - MDaemon AntiVirus - Email scanning application for MDaemon, designed around the Kaspersky engine.

Antionline - Archive of freeware and shareware antivirus applications.

Astonsoft - PC DoorGuard (intrusion scanner).

AV Eagle - Incident simulation program designed to help verify that antivirus and personal firewall programs are still operational and not disabled. Utilizes EICAR test files to verify signature based detection by installed virus scanner, and attempts to make outgoing connections to verify personal firewall operation.

AVDisk - Automates the process of creating antivirus boot disks from many popular virus scanners.

AVG Anti-Virus - The complex anti-virus protection for your computer.

BitDefender - Offers a variety of antivirus products, including specialized handheld device, peer-to-peer, and email scanners

BullGuard - Software featuring combined firewall, anti-virus, spam, and backup programs.

Central Command, Inc. - Company markets Vexira Antivirus software as well as: virus protection consulting, implementation, and audit services. Free trial virus protection downloads and up-to-date virus information.

Clam AntiVirus - Toolkit for UNIX systems released under GPL. Provides a scanning daemon intended primarily for mailserver integration, command line scanner for on-demand scanning, and update tool.

ClamMail - Monitors POP3 mail clients for viruses using the ClamAV database and program as a backbone.

Command AntiVirus - Anti virus products, downloads, support, and information on viruses.

Declude Virus - Mail server virus and vulnerability control software.

Deep Blue Creative - Defender Anti-Virus Server - Offers a dedicated email scanning appliance.

Deerfield - Visnetic Antivirus, AntiVirus Plug-in for MDaemon and AntiVirus Plug-in for EmailGuardian.

Finjan Software, Inc. - Offers software designed to combat server threats and manage servers as well.

FRISK Software International - F-Prot Antivirus for Windows, DOS, Linux and other platforms.

F-Secure - Anti-virus and anti-intrusion software designed for both home and corporate users.

GFI MailSecurity - An e-mail content-checking, anti-virus and e-mail exploit-detection solution for Exchange and SMTP servers.

GWAVA - Designed specifically for use with Novell's GroupWise, and is an Anti-Virus and eSecurity agent with content filtering, attachment blocking and Anti-Spam tools for use with GroupWise 5.5 or 6.x.

Hauri, Inc - Offer virus detection software (ViRobot) for servers (Windows/Unix), mail gateways (Domino/Exchange) and desktop (Windows) environments.

HBEDV - Produces AntiVir for DOS, Windows, Linux, FreeBSD, OpenBSD, NetWare and OS/2 platforms.

Kaspersky Lab - Developer of anti-virus, anti-spyware, anti-spam and personal firewall products. Includes downloadable trial versions.

Mail Warden - Mailserver content/virus filtering which integrates with Exchange, Lotus Notes, SLMail, and other mailservers.

McAfee.com - Produces the McAfee VirusScan line of antivirus software, as well as various specialized products for home and business users. Also offers managed security services for home and business users.

Merak Antivirus Software - A mail server based virus protection software that stops viruses on the mail server before they reach the end user.

MicroAntiVirus - Anti-virus software featuring a Trojan horse removal engine.

MicroWorld Technologies, Inc. - eScan and MailScan provides protection for the home PC, mail servers or entire network. Product specifications, screenshots, support forums, FAQs, news letter and download.

My-eTrust.com - Provides security and anti-virus software for small businesses and home computing.

netMailshar - Mailserver with integrated virus scanning

Nitrous Anti Spy - Anti virus, software for protection against virus, Trojan, and hacker attacks against your computer. Includes firewall and port scan protection.

NOD32 Antivirus System - Provides protection against viruses endangering your PC, running on various platforms from Microsoft Windows 95 / 98 / ME / NT / 2000 / XP, a number of UNIX operating systems and major mail servers.

Norman ASA - Anti-virus software, personal firewall, risk analysis, encryption, data recovery and certified data erasure.

OPSWAT AntiVirus SDK - Offers software development kits for integrating a variety of virus scanning engines.

Panda Software - Antivirus and security solutions for companies and home users by Panda Software, makers of Panda Antivirus Platinum, Panda Global Virus Insurance, Panda Security, Panda Invent, Panda Antivirus Lite and other global security solutions.

PCLogger - Utility designed to detect changes that suspected malicious software are making.

Prognet Technologies - Fire anti-virus kit (detection and repair).

Protector: email executable content filter - Ffree, open-source mail filter that blocks attachments which could contain viruses. For example - it blocks ".exe", ".pif" files and similar, but allows MS-Office documents provided they contain no macros.

Protector Plus - Proland Software antivirus software packages. Protector Plus is available for Windows 95, 98, ME, NT, 2000, XP, Exchange Server, and NetWare.

Quick Heal - India's leading anti-virus software. Available for Windows 95/98/ME/NT/2000/XP and can detect and remove all types of viruses. Prevents virus, trojan, and worm infections from internet downloads, email attachments, and network infections.

RAV Antivirus - Antivirus software package with plugins for many popular IM programs.

SmartCOP Anti-Virus - An easy to use yet powerful anti-virus software. Insta Scan utility allows users to scan their system online.

Solo Antivirus protection - Provides virus detection and removal tools, virus alerts, security information.

Sophos Anti-Virus - Antivirus software package targeted at business customers

Sybari Software, Inc. - Antigen for Lotus Domino and Antigen for Microsoft Exchange Servers.

Symantec - Makers of popular Norton Antivirus product.

Symantec Removal Tools - Freeware executables designed to remove specific viruses from a system.

Trend Micro Antivirus - News, product information from the anti-virus software developer.

Unistal Systems Pvt. Ltd. - Unistal Anti-Virus Software (virus detection and repair).

Update Sophos - Utility to automate the download of virus definition updates (IDE files) for Sophos Anti-Virus for Windows.

VET - VET Anti-virus. A eTrust company.

VirDet Labs - Produces Virus Detector for Windows.

Virus Chaser - Auto-updating anti-virus software developed by China Limited.

VirusArrest - Monitors Microsoft Outlook for evidence of viruses and worms. Warns of attempts by other programs to attach files to messages.

WebImmune - WebImmune allows users to submit infected files for analysis and offers detailed advice on removing the viruses it finds.

webProtectSoft - Offers products designed to protect computers against viruses. Additionally, offers firewall products and spam blocking products.

Zero-Knowledge Systems - Personal Firewall, Parental Control, Anti-Virus and other tools