Nilambar Sharma

<h3>Source Affix</h3>
<p>This is right plugin for you if you want to add source link to your post. It adds separate meta box for the input of source text. You can use this feature to any Post or Page. Even more, it also supports custom post type. Several plugin settings are also available. You can show sources in comma separated form or in an unordered list. You can append or prepend source to the content.</p>


Source Affix

A plugin for adding source links to your Post. Supports Page and Custom Post Type also.

dflydev

<p>This project is available for forking on GitHub:</p>
<ul>
<li>https://github.com/dflydev/embed-github-gist</li>
</ul>
<p>Embed <a href="http://github.com/" rel="nofollow ugc">GitHub</a> <a href="http://gist.github.com" rel="nofollow ugc">Gists</a> into<br />
WordPress. Provides a shortcode for posts and pages but also has the ability<br />
to embed by hand in the event that a Gist needs to be embedded somewhere in<br />
the page that does not pass through the shortcode filters.</p>
<p>Examples:</p>
<pre><code>[gist id=546764]
[gist id=546764 file=file.txt]
[gist id=546764 file=file.txt bump=1]
[gist]http://gist.github.com/546764[/gist]
</code></pre>
<p>Cache is implemented with the Transients API to minimize delay on loading<br />
content. Default TTL (time to live) is 86400 seconds or one day.</p>
<h4>Upcoming features:</h4>
<ul>
<li>Option for setting default TTL</li>
<li>Option to bypass cache entirely</li>
<li>Implement admin interface to control options</li>
</ul>


Source Affix vs Embed GitHub Gist