edckwt

By using Get Data Plugin, you can get content by URL and insert data in header or footer.
Features:
<ul>
<li>Get content by url</li>
<li>Insert content in header or footer</li>
<li>Using start/end element</li>
<li>You can allow/disallow getting data</li>
</ul>
Support: <a href="https://www.edc.org.kw" rel="nofollow ugc">EDC</a>.

Get Data

By using Get Data Plugin, you can get content by URL and insert data in header or footer.

momen2009

Easy theme change in the get parameter. Can be used theme to demo. 
this to be a per-session only change, and one that everyone (all visitors) can use.
<h4>How to use</h4>
I just enter the following URL. It’s easy.
http://wordpress_install_domain/?theme_changer=theme_folder_name

Theme Changer

Easy theme change in the get parameter. Can be used theme to demo. this to be a per-session only change, and one that everyone (all visitors) can use.

Get Data vs Theme Changer