Top 10 personal firewall software lists - Internet Security. The perfect personal firewall would be inexpensive and easy to install and use.

1. Comodo Free Firewall and AntiVirus software work together to keep your PC safe from malicious software and Hackers. Comodo Internet Security includes many new features and services, including Comodo Secure DNS, Comodo HopSurf and the ability to specify alternative URLs for program and virus updates.

2. ZoneAlarm program access is controlled by way of "zones", into which all network connections are divided. The "trusted zone" generally includes the user's local area network and can share resources such as files and printers, while the "Internet zone" includes everything not in the trusted zone. The user can specify which "permissions" (trusted zone client, trusted zone server, Internet zone client, Internet zone server) to give to a program before it attempts to access the Internet (e.g. before running it for the first time) or, alternatively, ZoneAlarm will ask the user to give the program permission on its first access attempt. Windows 7 is also supported in the latest version (2010)

3. PC Tools Firewall Plus is a powerful free personal firewall for Windows® that protects your computer by preventing unauthorized users from gaining access to your computer through the Internet or a network. By monitoring applications that connect to the network Firewall Plus can stop Trojans, backdoors, keyloggers and other malware from damaging your computer and stealing your private information.

4. Outpost Firewall Free gives you solid firewall protection with standard packet and application filtering to safeguard your data against unauthorized third parties. Plus, you get advanced protection against illegal program activity that will help stymie unknown threats. All this coupled with minimum impact on your system resources makes Outpost Firewall Free a must-have instrument for an unprotected PC.

5. Microsoft Security Essentials  provides real-time protection for your home PC that guards against viruses, spyware, and other malicious software. Microsoft Security Essentials is a free* download from Microsoft that is simple to install, easy to use, and always kept up to date so you can be assured your PC is protected by the latest technology. It’s easy to tell if your PC is secure — when you’re green, you’re good. It’s that simple. Microsoft Security Essentials runs quietly and efficiently in the background so that you are free to use your Windows-based PC the way you want—without interruptions or long computer wait times.

6. Lavasoft Personal Firewall provides the critical protection you need to keep your PC safe from unauthorized access. It is the ultimate security shield against hackers, keyloggers, Trojans and other malicious attempts to access data on your PC, while remaining simple, and easy to use.

7. Online Armor Firewall Our free version provides great security for those on a tight budget. The premium edition expands this protection with automatic updates and our unique "Banking Mode" to protect you when banking online - and our top of the line Online Armor ++ includes powerful Antivirus and Antispyware capabilities.

8. Ashampoo FireWall FREE gives you solid basic protection but if you want the full functionality of a modern firewall you need Ashampoo FireWall PRO. The Pro version includes all the strong features of the regular version – monitoring of incoming and outgoing Internet traffic, one-click protection and more – but it also gives you a whole range of powerful additional features.

9. Sunbelt Personal Firewall Protect yourself from hackers. Secure your PC with a 100% free firewall download. Get the full version free for 30 days. Sunbelt Personal Firewall (SPF) was called "our favorite" by PC Magazine.

10. FortKnox Firewall is personal firewall solution that allows you to protect a PC against hacker attacks, trojans, spyware and internet threats. Are you afraid of hackers or spyware that will steal your personal data and send it over Internet? Use Free Firewall Download and install FortKnox Personal Firewall and you will gain the control again.