<p>Simple SyntaxHighlighter for WordPress adds Alex Gorbatchev’s JavaScript <a href="http://alexgorbatchev.com/wiki/SyntaxHighlighter" rel="nofollow ugc">SyntaxHighlighter</a> to your blog.</p>
<p>Alex Gorbatchev’s SyntaxHighlighter is a fully functional self-contained code syntax highlighter developed in JavaScript. To get an idea of what SyntaxHighlighter is capable of, have a look at the <a href="http://alexgorbatchev.com/wiki/SyntaxHighlighter:Demo" rel="nofollow ugc">demo page</a>.</p>
<p>The plugin itself only wraps this functionality and provides some basic configuration through the WordPress Admin panel.</p>
<p>Features:</p>
<ul>
<li>Adds code syntax highlighting to blog</li>
<li>Includes syntax brushes for the following languages: ActionScript, BashShell, C/C++, C#, ColdFusion, CSS, Delphi/Pascal, Diff, Erlang, F#, Groovy, Java, JavaFX, JavaScript, Perl, PHP, Plain, PowerShell, Python, Ruby, Scala, SSIS Expressions, SQL, VB.net, and XML/HTML</li>
<li>Syntax brush availablity configurable by admin</li>
<li>Includes CSS Theme support</li>
</ul>


WP-SimpleSyntaxHighlighter

This plugin simply allows you to add and manage Alex Gorbatchev's JavaScript SyntaxHighlighter to your blog.

redcocker

<p>Just another code syntaxhighligher for the theme and plugin editor with CodeMirror. This plugin can highlight sourcecodes in the theme/plugin editor and provide a useful toolbar.</p>
<h4>Features</h4>
<ul>
<li>Highlight sourcecodes in theme and plugin editor on the dashboard.</li>
<li>Based on Marijn Haverbeke’s “<a href="http://codemirror.net/" title="CodeMirrorr" rel="nofollow ugc">CodeMirror</a>” JavaScript library.</li>
<li>Built-in 10 themes.</li>
<li>Useful toolbar which includes search/replace features.</li>
<li>Full-screen editing.</li>
<li>Auto-complete.</li>
<li>Easy to configure features through the setting panel.</li>
<li>Localization: English(Default), 日本語(Japanese, UTF-8).</li>
</ul>
<h4>Support languages</h4>
<ul>
<li>PHP</li>
<li>CSS</li>
<li>Javascript</li>
<li>(X)HTML</li>
</ul>
<h4>Recommended plugin</h4>
<ul>
<li>“<a href="https://wordpress.org/extend/plugins/wp-syntaxhighlighter/" title="WP SyntaxHighlighter" rel="ugc">WP SyntaxHighlighter</a>” can highlight sourcecodes on your front-end(posts, pages, comments).</li>
</ul>


CodeMirror for CodeEditor

Just another code syntaxhighligher for the theme and plugin editor with CodeMirror.

WP-SimpleSyntaxHighlighter vs CodeMirror for CodeEditor