Social Source Commons

Inexpensive antivirus software for up to five computers.

Anti-virus software for desktops and file servers.

Client-side software firewall, IDS, and anti-virus.

Antivirus software for the Mac OS.

Diagnostic utilities, optimization and Virus and Spyware protection

Norton Internet Security 2006 provides protection from viruses, worms, Trojan horses, spyware, port scans, privacy intrusions, and lurkers that intercept personal information.

irus protection and system maintenance tools to prevent and repair common computer problems

Security application suite for PCs.

Protection against malicious Internet content by restricting an application's access to system files and settings

Comprehensive business-strength protection against viruses, hackers, identity thieves, spyware, spam and other online threats that can jeopardize your privacy, your data, and your PC’s performance.

Firefox plug-in that warns you of malicious websites before you surf to them.

OpenAntiVirus is an open source community of experienced developers devoted to anti-virus research, computer and network security. Their project page offers a selection of security software including ScannerDaemon, VirusHammer, PatternFinder and more.

ClamXav is a free virus checker for Mac OS X. It uses the tried, tested and very popular ClamAV open source antivirus engine as a back end.

Protects computers against dangerous viruses, worms and other malware. Available in free and premium versions.

Antivirus tool for Macintosh

Protects Macs from network threats, viruses, Trojan horses and all other malware

Antivirus and anti-spyware software