Google has released a Chrome extension called "Password Alert" that notifies you when a website is phishing for your Google account password.
With the Password Alert Chrome extension installed, users entering their Google account password anywhere other than accounts.google.com will receive a popup warning them that their password has just been exposed and they should reset it immediately. Additionally, Password Alert will also try to warn you that you're on a fake Google sign-in page before you enter your password:
Password Alert also tries to detect fake Google sign-in pages to alert you before you've typed in your password. To do so, Password Alert checks the HTML of each page you visit to see if it's impersonating a Google sign-in page.
While it only works with Google account passwords, this still looks like a pretty great extension nonetheless. If you'd like to check out Password Alert, you can grab it now from the source link below.
Source: Chrome Web Store