Here are some of the comments made about ZoneAlarm from a number of leading industry and world media sources:
"ZoneAlarm Pro is simply one of the best firewall programs around." - Jim Lynch, MSNBC
"If you're worried about security for your small-office or home network (and you should be worried), look into ZoneAlarm Pro." - Seán Captain, PC World
"Version 2.1 of [ZoneAlarm] is a tour de force of software. This product is perfect and stunning. I can't recommend it enough." - John C. Dvorak, Editor, PC Magazine
"Of all the security products we reviewed, ZoneAlarm offers the most thorough Internet protection for the lowest possible cost." - Becky Waring, Editor, CNET
"ZoneAlarm is the most popular personal firewall of all time on ZDNet Downloads and with good reason. It's a superb shield to protect you against any threat out there." - Preston Gralla, Executive Editor, ZDNET
"Working from home today? Make sure your home system is as secure as the office network. Zone Labs' ZoneAlarm ... can do it." - Terrance A. Crow, Internet Security Advisor Magazine
"I ranked Zone Alarm as the best." - Jube Schiver, Los Angeles Times
"The perfect personal firewall would be inexpensive and easy to install and use, would offer clearly explained configuration options, would hide all ports to make your PC invisible to scans, would protect your system from all attacks, would track all potential and actual threats...only ZoneAlarm effectively alerts you in real time to all potential threats..." - Jeff Sengstack, PC World
"For personal, home office and small business use, we recommend Zone Labs' ZoneAlarm, an outstanding personal firewall that's highly effective and easy to use." - Steve Janss, Network World Fusion
"Our favorite port blocker is ZoneAlarm. Not only will Zone Alarm keep almost anything from getting into your system, it also keeps some things from getting out. By denying or granting Internet access to certain kinds of activities, Zone Alarm can keep your keystrokes from your enemies." - Russ Pitts, ZDTV
"I have been using ZoneAlarm for two months now and I find it to be as good, and sometimes better than firewall products that cost thousands of dollars more." - Jim Williams, About.com
"My current favorite personal firewall remains the free and excellent ZoneAlarm...Despite the fact that's it's free, ZoneAlarm does more than some $50 commercial products." - Fred Langa, WinMag
"My favorite is a free program called ZoneAlarm 2.0, which can be downloaded as a 1.5 megabyte file from www.zonelabs.com. It was introduced just a few weeks ago, but it appears to be the easiest and most comprehensive personal firewall and computer security program for Windows PC users." - Peter H. Lewis, The New York Times