mohanjith

Code Master

Helps you make the site available via https and http with no effort. Just install and activate 
and say good bye to SSL errors without forcing users to access via http or https only.
<h3>Notes & Credits</h3>
This plugin is written by <a href="http://mohanjith.com/" rel="nofollow ugc">S H Mohanjith</a>.
You should follow us on Twitter <a href="http://twitter.com/codemasteroy" rel="nofollow ugc">here</a>.

WordPress SSL

Have been using this plugin to resolve SSL errors for quite a while.  Has not failed and works just as advertised.  Ensures all links to resources are on the correct protocol.

Has worked well for a long period

Seamlessly map URLs to SSL if the site is accessed via SSL.

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

WordPress SSL vs WordPress Force HTTPS