McAfee SiteAdvisor is an internet filter for IE and Firefox, which warns you about rogue websites that you at risk of phishing scams, fraud, bad software, spam, adware and spyware. The toolbar button turns green when you will visit good sites and red on band ones. The best feature is the way it checks the results of Google and Yahoo searches before you even click any of the results.

Platforms: Internet Explorer, Mozilla Firefox
Website Address: www.siteadvisor.com
Download Link: www.siteadvisor.com/download/