ThomasHambach

Inspired by the script written by Blair Vanderhoof, this plugin allows you to input gist files directly into your WordPress posts using a jQuery callback.
Currently supports: * Showing a whole gist. * Showing single file in a gist. * Showing certain lines of a single file in a gist.

Gist Embed

This plugin allows you to input gist files directly into your Wordpress posts with a click of a button.

Bainternet

This plugin lets you embed Github’s Gists in your posts or pages, but the main deference then all others is that this plugin also enables you to create Gists without leaving your WordPress. 
that’s right you can create gists from within your WordPress admin. 
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/Q_dBkGQSU7g?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe>
Features
<ul>
<li>Updated to the latest GitHub API V3</li>
<li>Create Gists from your WordPress Admin panel</li>
<li>Internal cache built-in</li>
<li>Built in Tinymce (editor) button.</li>
<li>Works with all posts types (post,page,custom).</li>
</ul>
any feedback or suggestions are welcome.
check out my <a href="http://en.bainternet.info/category/plugins" rel="nofollow ugc">other plugins</a>

Simple Gist Embed

This plugin lets you embed Github's Gists in your posts or pages, but the main deference is that this plugin also enables you to create Gists wit …

Gist Embed vs Simple Gist Embed