CyberStar Systems

Although it does not have the full coverage of its commercial counterpart, this free TrendMicro antivirus will provide some protection from harmful viruses and malware.  Lightweight and will not slow down your computer.

Note to Trend Micro Internet Security Users: Trend Micro Internet Security includes all the functionality of HouseCall, plus automatic virus updates (HouseCall does not offer automatic updates), personal firewall, spyware detection & removal, spam blocking, protection against identity theft, and wi-fi network protection. Learn more about purchasing Trend Micro Internet Security