Miaz Akemapa

Regnomail is a plugin to customize your registration form. It disable sending email confirmation during user registration to admin and to user itself.
Regnomail Features:
<ul>
<li>Disable email confirmation to user during registration</li>
<li>Disable new user email notification to admin</li>
<li>Disable user change password notification (lost password) to admin</li>
<li>Show password input form, so user can input their own password</li>
<li>Show First and Last name input form</li>
<li>Change login / registration logo image.</li>
</ul>
Read more details here: 
<a href="http://www.vnetware.com/regnomail" rel="nofollow ugc">http://www.vnetware.com/regnomail</a>

Regnomail

Disable new user registration confirmation email.

Firdaus Zahari

This plugin allows users to set their passwords during the registration process. Once activated, a password field will appear on the registration field which uses the same functionality as the password field you get when you’re resetting your password.
The email notification sent to the new user is also modified to indicate a successful password set.

FS Registration Password

Allow users to set their own password during site registration.

Regnomail vs FS Registration Password