The IT Security website features a good categorized list of free security utilities. Some of these a trial versions, limited versions of the full product, or web based facilities. Even folks on a very tight budget can protect their systems well with many of these free tools.
 
 IT Security website - 103 Free Security Utilities featured
 http://www.itsecurity.com/features/103-best-free-security-utilities-041608/
 
 QUOTE: Competition drives prices down, regardless of the industry. With a crowded field of vendors jockeying to be the trusted source of computer security for your home and office, prices for many of the essential elements of your security system have reached zero. Free downloads, free trials, free scans and freeware is everywhere. If you’re willing to go without premium features like phone support, you can have a simple version of powerful software that large companies pay big bucks for.