grettke

Out of the box, <a href="https://wordpress.org/extend/plugins/wp-syntax/" rel="ugc">WP-Syntax</a> 
colors code using the default <a href="http://qbnz.com/highlighter/" rel="nofollow ugc">GeSHi</a> colors. 
Per the authors advice in the ‘Advanced Customization’ section of 
<a href="https://wordpress.org/extend/plugins/wp-syntax/other_notes/" rel="ugc">Other Notes</a>, 
you can configure GeSHi yourself by handling the <code>wp_syntax_init_geshi</code> 
hook and configuring it programmatically.
Since I wanted to do just that, I decided to publish a generic plugin 
for folks who wanted to configure GeSHi following this approach.
<h3>Release Notes</h3>
1.2 : Set keyword expansion in the plugin file. Uses Wp-Syntax 0.9, which depends on GeSHi 1.0.7.22.
1.1 : Fixed grammatical errors in the readme.txt. Uses Wp-Syntax 0.9, which depends on GeSHi 1.0.7.22.
1.0 : First public release. Uses Wp-Syntax 0.9, which depends on GeSHi 1.0.7.22.

wp-syntax-rettke

wp-syntax-rettke serves as an example for the programmatic 
"Advanced Configuration" of GeSHi in Ryan McGeary's excellent WP-Syntax plu …

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 …

wp-syntax-rettke vs Simple Gist Embed