Easy Comment is a Firefox plugin for blog commenting. It helps you fill out Blog Comment Forms easily with your Name, Email, Homepage URL and Message. You can save your details once in this easy-comment form and then it will automatically fill your comments section, while you are commenting on other blogs/websites. You can build more backlinks in less time and easily too.
2. Autofill Forms (add-on for Mozilla browser)
Some links may require registration . Autofill Forms enables you to fill registration forms with one click or a keyboard shortcut.
For full instructions on How to Use, download this short guide:
This tools are perfect for manual link building