Forces all logged in users to stay on SSL connection. Guests are still served http. 
Just install and activate – all done!
<ul>
<li>NOTE: The ‘force_ssl_admin’ and ‘force_ssl_login’ directives in ‘wp-config.php’ are not needed while using this plugin.</li>
</ul>
<h3>Features</h3>
<ul>
<li>SSL Login</li>
<li>SSL enforced for entire logged-in session</li>
<li>SSL for Admin and front-end of site</li>
<li>No messing with ‘wp-config.php’ or ‘htaccess’ directives</li>
<li>Easy to use, just install and activate on any SSL equipped site – no configuration required</li>
<li>WordPress 3.5 compatible</li>
<li>Network/Multisite compatible – can be activated on any sites in the Network, individually – sites should have a valid SSL certificate</li>
<li>Buddypress compatible</li>
<li>WP-Super-Cache compatible</li>
<li>S2Member compatible</li>
<li>Bulletproof Security compatible</li>
<li>The ‘force_ssl_admin’ and ‘force_ssl_login’ directives in ‘wp-config.php’ are not needed while using this plugin.</li>
</ul>

SSL for Logged In Users

Forces all logged in users to stay on SSL connection

phikai

Forces your entire site to ALWAYS use HTTPS
Please help by reporting any bugs/feature request at the link below.
Bugs:
<ul>
<li>Report at: <a href="https://github.com/phikai/wordpress-force-https/issues" rel="nofollow ugc">Github Issue Tracker</a></li>
</ul>
Questions/Comments:
<ul>
<li>http://www.kaiarmstrong.com/contact/</li>
</ul>

WordPress Force HTTPS

Forces your entire site to ALWAYS use HTTPS

SSL for Logged In Users vs WordPress Force HTTPS