DefenseWall!

Comodo Firewall Pro - Secure your system against internal attacks such as Trojan viruses / malicious software and external attacks by hackers. Safeguard your personal data through a simple user friendly single click interface offering full immunity to attack. Comodo Firewall Pro helps you connect in a secure way to the internet and global networks.

TinyWall is a free software to harden and control the advanced firewall built into Windows Vista, Windows 7 and Windows 8. TinyWall includes a combination of features that sets it apart from both commercial and freeware firewalls: TinyWall does not annoy you with popups at all, yet it is still extremely easy to add exceptions to your firewall rules; TinyWall does not require you to know about ports, protocols and application details; TinyWall prevents malicious programs from modifying the settings of Windows Firewall. »

Gufw is an easy, intuitive way to manage your Linux firewall. It supports common tasks such as allowing or blocking pre-configured, common p2p, or individual ports port(s), and many others! Gufw is powered by Uncomplicated Firewall (ufw).

Windows Firewall Notifier (WFN) extends the default Windows embedded firewall behavior, allowing to visualize and handle incoming or outgoing connections.

This personal firewall and intrusion detection application provides comprehensive online security. It constantly monitors your PC for intrusion and reports any findings, so you can take the appropriate action.

Protects your applications from undesirable network incoming and outgoing activity, controls applications internet access. Allows you to control personal information leakage via controlling application network traffic.

ZoneAlarm Free Firewall blocks hackers from infiltrating your home PC by hiding your computer from unsolicited network traffic. By detecting and preventing intrusions, ZoneAlarm Free Firewall keeps your PC free from viruses that slow down performance, and spyware that steals your personal information, passwords, and financial data.

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.

Filseclab Personal Firewall Professional Edition is one of the most important software of Filseclab, it is very easy to use and also very powerful. It can provide more secure protection for your PC, and it is FREE.

Firestarter is an Open Source visual firewall program. The software aims to combine ease of use with powerful features, therefore serving both Linux desktop users and system administrators.

Wallix Pro Firewall prevents intruders from accessing your computer and that’s the main objective for a computer firewall. It automatically detects and blocks attacks through a comprehensive examination of all inbound and outbound information to your computer. Wallix Pro offers an easy interface, with clear details that present you a list with all installed programs from your computer. Unwanted programs can be uninstalled at any time by just a few clicks.

Look n Stop is the best in its class security application to prevent spyware. Secured by Look n Stop, your PC also becomes fully invisible to net hackers by stopping all suspicious traffic. Rated among the highest firewall in leak tests. Unlike other firewalls, Look n Stop is optimized to keep your computer and your connection running at peak performance, consuming very little resources. Look n Stop comes preconfigured and ready to use out of the box, you can easily set it up with a few mouse clicks. Look n Stop is detected as a trusted firewall by the Microsoft Windows Security Center (Windows XP SP2). Look n Stop is compatible with ICS - You can share your Internet connection safely between several computers. »

Guarddog is a firewall configuration utility for Linux systems. Guarddog is aimed at two groups of users. Novice to intermediate users who are not experts in TCP/IP networking and security, and those users who don't want the hastle of dealing with cryptic shell scripts and ipchains/iptables parameters.

NuFW is a GPL extension to Netfilter (that is Linux firewall). It adds identity-based filtering, i.e. it is possible to create firewall rules dependent on the user.

Sygate Personal Firewall is a bit old but good firewall for Windows. It uses very small amount of system resources and is quite robust.