Browser Defender is a utility developed by PC Tools which protects the computer by providing informative assessment of websites and the possible dangers they pose, thereby allowing the user to make better informed choices when browsing the Internet. A green, red or yellow rating let the user know immediately if, in ThreatExpert's opinion, the website is safe to visit, harmful or needs to be visited with caution. If the website is not amongst the crawled domains, then a grey rating will be shown.