ThreatFire analyzes your computers behavior to detect & block malicious activity.
Rated best FREE HIPS! Comprehensive protection against viruses, worms, trojans, spyware, rootkits, keyloggers & buffer overflows
Real-time behavior-based malware detection
Immediately shut down destructive processes and quarantine malware
AntiVirus engine with signature updates to perform on-demand or scheduled scans of your entire PC for known threats
Automatic updates (when opted in to ThreatFire Community)
ThreatFire reporting and protection statistics
Malware quarantine & removal
Rootkit scanner - ability to schedule and customize
Advanced custom rules settings, fully configurable
System Activity Monitor - view instructive data about all running processes
Informative alerts provide guidance on how to proceed; most threats automatically quarantined
Free online support
Personal and individual use allowed
Minimum System Requirements (Windows 32-bit only):
* Windows Vista, Windows XP SP1 or SP2 (Home, Pro & Media Center Editions), Windows 2000 SP 4 with Update Rollup 1, or Windows 2003
* 15 MB of disk space
http://www.threatfire.com/