SterJo Software has released SterJo Mail Password, a free Windows tool which recovers and displays webmail account details for Gmail, Yahoo, Hotmail, AOL, GMX, Zoho and one or two more.
There’s no hacking or brute forcing involved. The program simply checks the credentials stored by your Chrome, Firefox, Internet Explorer and Opera setups, so if these aren’t saved locally then it won’t show anything at all.
Mail Passwords is supremely easy to use. Unzip the download, run MailPasswords.exe, click the Unlock icon on the toolbar (or select File > Show Mail Passwords), your system is scanned and the mail service, user name and password are displayed for any local accounts.
Right-click an account and you'll find options to copy the user name, password, or all of its details to the clipboard (there’s no direct "save everything to a file" option, unfortunately).
This worked well for us, and is a quick way to recover forgotten passwords.
It could also be used by snoopers to grab someone else's logons, though, which is why it's generally a bad idea to allow browsers to store passwords locally. If others have access to your PC, download the program and run it and see what they might be able to find.
SterJo Mail Password is a free tool available for Windows XP and later.