System Mechanic Professional 8
Make your PC run like new! Protect your data from malware and intruders. Junk files, fragmented drives, and registry clutter will slow down your computer and cause system errors and crashes. System Mechanic Pro combines 6 powerful products to optimize your registry, defragment drives and memory, remove unwanted files, manage installed programs, speed up your internet connection, securely erase sensitive data, and remove malware.

Jetico Personal Firewall 1.0.1.61
Jetico Personal Firewall protects your computer from unwanted hacker's attacks from outside as well as from malicious programs "living" secretly inside your computer's memory and hard drive. Three levels of protection are included: low-level network packets filtering, application-level network events filtering and filtering of user-level process activity. Jetico Personal Firewall checks every packet that comes in or out of your computer.

TZ Personal Firewall 4.0.0.0
TZ personal firewall stops Hackers, Trojans, Spyware, Viruses, DoS attacks & data thieves. Put a secure barrier between your hard drive & hackers, whether you use a dial -up, ISDN, DSL & cable connection. Includes four inter locking security services: a firewall, an Application Control, an Internet Lock, & Zones. Allows you to Lock your PC ,so no connection will be allowed. Monitor all incomming & outgoing activity

SecurWall 0.98
SecurWall provides highest security using a simple and friendly interface, protecting your machine from outer attacks and malicious programs. SecurWall is a personal desktop firewall designed to protect computers against malicious attacks, port scanning, viruses and other software entities, making your PC invisible on the Internet. SecurWall is the winner of the prestigious Sc-Magazine Award 2006 as "Best Desktop Firewall".

Comodo Memory Firewall 2.0.4.20
Free Comodo Memory Firewall adds another critical layer of security to home and business PC’s by monitoring for and preventing most types of buffer overflow attacks. These attacks occur when a malicious program or script addresses more data to its memory buffer than it can store. The goal of most attacks is to destabilize the system then install malware onto the victim PC in order to execute a range of attacks such as identity and data theft.