Bryan Petty

Adds line numbers, syntax highlighting, code folding, and lots more to the 
theme and plugin editors in the admin panel.
This plugin replaces the boring, clunky, and difficult to use theme and plugin 
editor with a full-featured code editor using the Ajax.org Cloud9 Editor.
Requirements:
<ul>
<li>Javascript Enabled (will use default editor if disabled)</li>
<li>Browsers: Internet Explorer 9+, Chrome 21+, Firefox 10+, Safari 6.0+</li>
</ul>
Included Themes:
<ul>
<li>Ambiance</li>
<li>Chaos</li>
<li>Chrome</li>
<li>Clouds</li>
<li>Clouds Midnight</li>
<li>Cobalt</li>
<li>Crimson Editor</li>
<li>Dawn</li>
<li>Dreamweaver</li>
<li>Eclipse</li>
<li>GitHub</li>
<li>idleFingers</li>
<li>IPlastic</li>
<li>KatzenMilch</li>
<li>krTheme</li>
<li>Kuroir</li>
<li>Merbivore</li>
<li>Merbivore Soft</li>
<li>Mono Industrial</li>
<li>Monokai</li>
<li>Pastel on Dark</li>
<li>Solarized Dark</li>
<li>Solarized Light</li>
<li>SQL Server</li>
<li>Terminal</li>
<li>TextMate</li>
<li>Tomorrow</li>
<li>Tomorrow Night</li>
<li>Tomorrow Night Blue</li>
<li>Tomorrow Night Bright</li>
<li>Tomorrow Night 80s</li>
<li>Twilight</li>
<li>Vibrant Ink</li>
<li>Xcode</li>
</ul>
Supported Languages:
<ul>
<li>ABAP</li>
<li>ABC Notation</li>
<li>ADA</li>
<li>ActionScript</li>
<li>AppleScript</li>
<li>AsciiDoc</li>
<li>Assembly x86</li>
<li>AutoHotKey</li>
<li>BatchFile</li>
<li>C9Search</li>
<li>C/C++</li>
<li>Clojure</li>
<li>Cobol</li>
<li>CoffeeScript</li>
<li>ColdFusion</li>
<li>C#</li>
<li>CSS</li>
<li>Curly</li>
<li>D</li>
<li>Dart</li>
<li>Diff</li>
<li>Dot</li>
<li>Elixir</li>
<li>Elm</li>
<li>Erlang</li>
<li>EJS</li>
<li>Forth</li>
<li>FreeMarker</li>
<li>Gherkin</li>
<li>gitignore</li>
<li>Glsl</li>
<li>Go</li>
<li>Groovy</li>
<li>HAML</li>
<li>Handlebars</li>
<li>Haskell</li>
<li>haXe</li>
<li>HTML</li>
<li>HTML (Ruby)</li>
<li>Ini</li>
<li>Jade</li>
<li>Java</li>
<li>JavaScript</li>
<li>JSON</li>
<li>JSONiq</li>
<li>JSP</li>
<li>JSX</li>
<li>Julia</li>
<li>LaTeX</li>
<li>Lean</li>
<li>LESS</li>
<li>Liquid</li>
<li>Lisp</li>
<li>LiveScript</li>
<li>LogiQL</li>
<li>LSL</li>
<li>Lua</li>
<li>LuaPage</li>
<li>Lucene</li>
<li>Makefile</li>
<li>MATLAB</li>
<li>Markdown</li>
<li>MaskJS</li>
<li>Maze</li>
<li>MySQL</li>
<li>MUSHCode</li>
<li>Nix</li>
<li>Objective-C</li>
<li>OCaml</li>
<li>Pascal</li>
<li>Perl</li>
<li>pgSQL</li>
<li>PHP</li>
<li>Powershell</li>
<li>Prolog</li>
<li>Properties</li>
<li>Protobuf</li>
<li>Python</li>
<li>R</li>
<li>RDoc</li>
<li>RHTML</li>
<li>Ruby</li>
<li>Rust</li>
<li>SASS</li>
<li>SCAD</li>
<li>Scala</li>
<li>Scheme</li>
<li>SCSS</li>
<li>SH</li>
<li>Smarty</li>
<li>snippets</li>
<li>Soy</li>
<li>SQL</li>
<li>SQLServer</li>
<li>Stylus</li>
<li>SVG</li>
<li>Tcl</li>
<li>Tex</li>
<li>Text</li>
<li>Textile</li>
<li>Toml</li>
<li>Twig</li>
<li>Typescript</li>
<li>Vala</li>
<li>VBScript</li>
<li>Velocity</li>
<li>XML</li>
<li>XQuery</li>
<li>YAML</li>
</ul>

Better File Editor

Adds line numbers, syntax highlighting, code folding, and lots more to the theme and plugin editors in the admin panel.

Nico

Despite two plugins already on wordpress.org I decided to write my own from scratch. The result is a minimalistic but powerful plugin with only ~250 lines of PHP.
<ul>
<li>Supports every possible Prism configuration.</li>
<li>Adds TinyMCE dropdown lost for <code><code class="language-xxx"> and <pre class="language-xxx"></code> for bash, css, js, markup, php, scss. (I can make a filter if you want to add more.)</li>
<li>Does not load prism on every page, only when needed.</li>
<li>Supports automatic detection of prism HTML.</li>
<li>Supports displaying code from custom fields with <code>[prism]</code> shortcode.</li>
<li>Developers may use the <code>prism</code> handle to enqueue the pre-registered script and style.</li>
<li>Has admin editor button for quick shortcode template snippet.</li>
<li>Has no options page by design.</li>
<li>Read more -> <a href="http://nextgenthemes.com/plugins/prism-syntax-highlighter-for-wordpress/" rel="nofollow ugc">Prism Syntax Highlighter for WordPress</a></li>
</ul>
Bundled Prism Version (2016-09-17)
Link: http://prismjs.com/download.html?themes=prism-okaidia&languages=markup+css+clike+javascript+bash+less+php&plugins=line-highlight+line-numbers+wpd+show-language
Skin: Okaida
Languages
<ul>
<li>Markup</li>
<li>CSS</li>
<li>C-like</li>
<li>JavaScript</li>
<li>Bash</li>
<li>PHP</li>
<li>Sass (Scss)</li>
</ul>
Plugins
<ul>
<li>Line Highlight</li>
<li>Line Numbers</li>
<li>WebPlatform Docs</li>
<li>Show Language</li>
</ul>

Prism Syntax Highlighter for WordPress

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Most lightweight, yet most configurable and advanced PrismJS WordPress integration plugin. Custom fields display (detached) supported.

Better File Editor vs Prism Syntax Highlighter for WordPress