PhishDetect

PhishDetect is a tool to help at-risk users to identify potential phishing attacks. It allows to distribute up-to-date blocklists, to easily detect and report suspicious emails and links, and to scan unknown pages.
PhishDetect Browser Extension hooking into Gmail's web interface.
PhishDetect warns that the link was detected as a phishing page.
PhishDetect informs that the visited link is a legitimate site and will redirect to it.
If you are interested in using, or especially, in contributing the development of PhishDetect: