SpywareGuard provides active protection much like an anti-virus's auto-protect program running in the background. Before any Exe or CAB file is executed it scans forknown spyware and will prevent any infected file form executing. So unlike Ad-Aware & SpyBot which only scan and catches spyware if you run them, SpywareGuard give full-time active protection. http://www.wilderssecurity.com/spywareguard.html
SpywareBlaster to prevent spyware from installing on your PC http://www.wilderssecurity.net/spywareblaster.html