Free antivirus engines software for windows

Firefox extension that will permit you to organize your search engines Organize Search Engines allows you to organize your search engines with separators and folders.
This is definitely only for power users with dozens of installed search engines. But those will surely appreciate it.
This extensions is incompatible to Search Words. Differently from Search Words, keywords also work for engines using "post" requests when using Organize Search Engines.
System requirements:
- Firefox: 2.0 ? 3.0b2

ClamWin Antivirus 0.88 offers a graphical user interface to the Clam AntiVirus engine. ClamWin uses the GNU General Public License. ClamWin Antivirus comes with an installer and open source code at no cost. It features: scanning scheduler, automatic virus database updates, atandalone virus scanner, integration to MS Windows Explorer, and add-in to MS Outlook.

Major Features:

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

WareSeeker Editor

Get the latest virus definition update for F-Secure AntiVirus. With multiple scanning engines, F-Secure AntiVirus is the most comprehensive, real-time virus scanning and protection system for all Windows platforms. It is a three-tiered solution aimed at the corporate market, and includes a wealth of features for network management and centralized deployment. The F-Secure Anti-Virus products combine excellent administration features with background, real-time scanning to catch viruses on-the-fly.