railmedia

Very lightweight plugin which if activated, it locks down the website for public access. Visitors will be prompted with the wp-login.php page where they should log in to access the site. Useful for under construction websites.

WordPress Require Login

shawfactor

I wrote this plugin as I needed full flexibility when adding an “agree to terms” check box to your login or registration forms,
Not only does this plugin facilitate requiring users to agree, but also allows you to customise and configure the terms and conditions message, add links, and also the customise the message those who have not agreed see.
Additional features include:
<ul>
<li>User registration support</li>
<li>Buddypress support</li>
<li>Multisite support</li>
</ul>

LH Agree to Terms

Add a HTML5 "Agree to terms" check box on login or registration forms.

WordPress Require Login vs LH Agree to Terms