McAfee Security Center is really good.
McAfee currently develops many security tools for the PC, both for corporate and home users, including:
McAfee VirusScan (antivirus, some antispyware components)
McAfee Total Protection for Small Business (antivirus, antispyware, firewall)
McAfee Personal Firewall Plus (firewall)
McAfee GroupShield (antivirus for mail servers)
McAfee SpamKiller (antispam)
McAfee Privacy Service (anti-abuse, plus Anti-phishing)
McAfee AntiSpyware (full antispyware, plus Anti-phishing)
McAfee QuickClean (secure shredder, file cleanup)
McAfee SiteAdvisor (free) (alerts users when entering dangerous sites, basing on downloads, popups and number of e-mail received)
McAfee SecurityCenter (free) (gateway to managing most McAfee services, as well as Windows updates management)
McAfee LinuxShield (antivirus for enterprise editions of Redhat and SUSE distributions.)
McAfee Wireless Security protects wireless networks.
McAfee IntruShield (Intrusion Prevention Appliance)