Spyware: the scourge of the Interwebs! Send it packing with Check Point Software's ZoneAlarm Anti-Spyware, a CNET Editor's Choice winner. Normally $29.95, the software's now available free of charge--but you've got to download it today before 8 p.m. ET. After that, it turns back into a pumpkin--er, a commercial product.
While you're at it, snag ZoneAlarm ForceField and ZoneAlarm Firewall (available via the same link). The former's free while in beta; the latter's a full-time freebie. All three products require Windows 2000 or XP (ZoneAlarm Firewall also supports Vista). (via AppScout)