Andrew Norcross

A sidebar widget to display your public gists from GitHub. Allows for optional display of creation date and link back to your GitHub profile page. Uses v3 of the GitHub API.
<h3>Potential Enhancements</h3>
I plan on including the Transients API in an upcoming release…once I figure out exactly how they work. Otherwise, feel free to suggest.

GitHub Gists Sidebar Widget

A sidebar widget to display your public gists from GitHub.

Akeda Bagus

This plugin provides the ability to save post into <a href="https://gist.github.com" rel="nofollow ugc">GitHub Gist</a> every time a post is saved.
Features
<ul>
<li>Choose which post type is enabled.</li>
<li>Saves post content as text file and post object (as JSON).</li>
<li>Updates post also updates the Gist (creating Gist revision).</li>
<li>Meta box which shows Gist associated with the post.</li>
<li>Gist publicity follows post status.</li>
</ul>
Development of this plugin is done <a href="https://github.com/gedex/wp-post-to-gist" rel="nofollow ugc">on GitHub</a>. Pull requests welcome.

Post to Gist

Post to GitHub Gist every time a post is saved.

GitHub Gists Sidebar Widget vs Post to Gist