1)   BullGuard 5.0
Protect your PC from hackers and viruses. With full antivirus, firewall, and backup protection, BullGuard secures your PC from the menaces of the Web. BullGuard features full e-mail protection, no matter what e-mail-client you use.

 2)   Armor2net Personal Firewall 3.123
Armor2net personal firewall software protects your PC from Internet-borne threats and meets your requirements in multi-field of Internet security and Internet privacy. Able to stop pop-up ads windows and remove spywares.

 3)   VisNetic Firewall 2.3
More secure than application-level firewalls, yet more cost effective than competing packet-level firewalls, VisNetic Firewall provides protection to Windows-based Servers, stand alone PCs, and/or LAN workstations from internal and external threats.