Autofill a Website Username & Password

Yes, I think it is possible but on some browsers. Some are Mozilla Firefox and Avant Browser (you can download it on http://www.avantbrowser.com/download.htm... ). On Mozilla Firefox when you fill the Username and Password, a dialog box appears aksing you that if you want Firefox to remeber the password. After you select remember, when you open the site firefox will automatically fill your username and password and all you have to do is just click "Sign In". On Avant Browser is also just like firefox. Also i think it has another thing. When you open the Browser a pop-up comes from the bottom right of the screen. I think it is useful though i didn't try it.

Hello,

In your new website you can implement web requests that get logs in automatically.

For example, when you click on "facebook" link, it will load the facebook's login page, will insert the username and password and you will be logged in.

I have already made it using .NET (C#). There's plenty of other languages.
You can use javascript too. It's up to you!