Neil Mickelson

This plugin allows page authors to easily demonstrate shortcodes in their posts and pages by wrapping them inside a shortcode that does—well, nothing. It’s a NOOP.
<h3>Usage</h3>
Just wrap the shortcode you’re trying to demonstrate in enclosing [wrapper] shortcodes, like this:
<blockquote>
[wrapper][shortcode_example][/wrapper]
</blockquote>

SR-Wrapper

This plugin allows page authors to easily demonstrate shortcodes in their posts and pages by wrapping them inside a shortcode that does---well, nothin …

Ryan

iframes get a bad wrap, and rightly so in many cases. But when you want to embed 
one website inside of another one in a single step, they’re a really easy way to make it work.
<h4>Usage</h4>
Inside whatever post or page you want to embed another site, use the short code
[iframeWrapper url=http://example.com]
This will put an iframe linking to example.com into your page. The width will 
be 100% of the contain it’s in and the height will automatically adjust to the 
contents of the frame.
This plugin was originally written to embed <a href="http://www.proofbuddy.com" rel="nofollow ugc">ProofBuddy</a> 
sites within a WordPress theme without much fuss. But it should work well to embed 
any site within a WordPress theme.

iframe Wrapper

A small little plugin to embed an auto resizing iframe into a WordPress page or post.

SR-Wrapper vs iframe Wrapper