Top 5 Firewall

1) Sygate® Personal Firewall PRO
Before being discontinued by Symantec as a product, Sygate Personal Firewall software offered solid network protection, activity logging, and automatic email notifications. Free for personal use, it supported advanced configuration options without being overly difficult to use. The PRO edition (no longer available) includeed guaranteed VPN support, an unlimited number of security rules, ability to import/export settings to multiple computers, and one year of free upgrades.

2) ZoneAlarm™ Pro
Zone Labs provides a free ZoneAlarm download, too. The Pro edition adds email attachment protection similar to that offered by antivirus software, password protection, and ICS/NAT support. ZoneAlarm runs in Stealth Mode, making your PC literally "invisible" on the Internet. Though missing some of the more advanced personal firewall controls, its user interface includes handy features like the "Stop" button.

3) Symantec Norton Personal Firewall 2007
Some claim that Norton's graphic interface isn't as easy to use as some other products in this category. Symantec doesn't offer a free trial version of this personal firewall software product either. Still, it continues to improve, and a new Home Network Assistant feature simplifies administering security across the home LAN. The Norton Personal Firewall software is solid and from a reputable company.

4) Tiny Personal Firewall
A relative newcomer to the scene but now an established technology, the TINY Personal Firewall boasts low memory usage (small "footprint") on installed systems. It also contains an interesting time-based rule feature, where packet filters can be set to operate only at certain times of day. The U.S. Air Force chose this product as standard firewall software for its desktop computers. TINY Software provides a free personal version for home users.
Manufacturer's Site

5) McAfee Personal Firewall Plus
McAfee's software is sold on a one-year subscription basis rather than on one-time purchase, a feature that may appeal to some, but no free trial exists. McAfee also possesses a comparatively small footprint and a central "Control Panel" style of user interface. Product updates occur "live" over the Internet. McAfee does not support Windows ICS networks or the IIS Web server.

related Post
Top 5 Antivirus

Top 5 antivirus

1) McAfee VirusScan Plus
Antivirus, antispyware, and firewall are included in this 'mini-suite' from McAfee. An ideal candidate for those seeking robust protection without all the bloat of traditional Internet security suites.

2) BitDefender Professional Edition
Softwin's BitDefender Professional protects against viruses, spyware, and instant messaging threats, as well as offering firewall rules to block undesirable traffic and a privacy gateway to keep your identity and preferences private while surfing the Internet.

3) McAfee Internet Security

For those seeking a full blown Internet security suite, McAfee Internet Security offers traditional antivirus, firewall and antispyware complete with spam and phishing protection as well as backup utilities. McAfee's superb detection rates are near legendary.

4) Kaspersky Anti-Virus Personal
Kaspersky offers excellent antivirus protection, perhaps unsurpassed in its ability to recognize various compression algorithms and accurately detect infected files contained within the archives. However, their interface is rather convoluted and may be best suited to more advanced users. Should be used in conjunction with a firewall.

5) PC-cillin Internet Security Suite
Building on its solid antivirus capabilities, PC-cillin Internet Security Suite automatically checks for new virus updates every 3 hours and the spam prevention includes a whitelist, blacklist, and Bayesian filter - all at a price substantially lower than many other antivirus suites. If spyware is a problem, consider supplementing the spyware scanner in PC-cillin with either Windows Defender or CounterSpy.