Site offers both free and paid anti-virus/anti-spyware software and information on known computer viruses.

Clam AntiVirus is an open source (GPL) anti-virus toolkit for UNIX, designed especially for e-mail scanning on mail gateways

A free antivirus program for windows.

A new free service provided by AOL that is an always on protection and scanner against virus threats.

This is a mail virus scanner for Linux and similar platforms. It automatically scans all incoming mail for suspicious attachments. Specially useful for mail servers.

ClamXav is a free virus checker for Mac OS X.

The Anti-Virus or Anti-Malware test file

Free virus scanner and support page.

Malware scan service to which you can upload a file and scan for viruses and other malicious code.

A website concerned clarifying misconceptions regarding computer security. It alerts people to computer virus myths, hoaxes, hysteria, and misconceptions.

The Virus Source Code Database (VSCDB) is for information purposes only, for researchers and computer virus or programming enthusiasts.

Library of computer viruses, tutorials about viruses, and general information about viruses, as completely as the webmaster can compile it.

avast! is dedicated to protecting you from online viruses. It offers a variety of down loadable protection, plus updates to keep you current on viruses.

Free tools, scans, and downloads

Tests web sites to detect phishing scams, malware sites and adware downloaders. Rates websites for perceived dangers. Downloadable toolbar to display ratings.

Spybot - Search & Destroy detects and removes spyware, a relatively new kind of threat not yet covered by common anti-virus applications.