ENABLE PASSWORD SAVE OPTION
You can easily enable Chrome to save passwords for website you visit. Click the Tools menu > Select Options > Click the Minor Tweaks tab and then check option ‘Offer to save passwords’. Now Chrome will save username and passwords for you.

HOW TO VIEW STORED PASSWORDS?
Click the Tools menu > Select Options > Click the Minor Tweaks tab. In the ‘Passwords’ section, click the Show saved passwords button.

In Firefox, navigate to the Tools \ Options menu item. Select the Privacy button, the Passwords tab, and then click on View Saved Passwords. You’ll be presented with this screen:

Click the Show Passwords button, and navigate down to the website password you are looking for

Safari :

 

In Firefox world viewing the saved passwords is really easy . You just need to go to Firefox preferences in Mac ( and tools> options in Windows ) then to Security tab and click on the “Saved Passwords” then “Show Passwords” . Its not possible from Safari menu to see the Autofill passwords . In Mac there is something called “Keychain Access” which does this thing of saving and revealing the saved passwords from Safari as well as other Mac application . So basically to see the Safari saved password in Mac open Keychain Access navigate to the website or username whose password you forgot , right click the particular row and click ” Copy Password to Clipboard” . You can paste it to any text editor ( eg. Textedit ) and see the saved password. This way finally , i got my lost password .