Styles The Code using lightest Prism.JS.
Syntax Highlighter supporting multiple languages, themes, fonts, highlighting from a URL, or post text.
A plugin to easily present source code on your site with syntax highlighting and formatting (as seen in code editors, IDEs).
A no-fuss, lightweight, fast and optimised syntax highlighter for WordPress
SmartAss Highlighter is extremely simple and easy to use syntax highlighter for your code. Shortcode - [highlighter]
Most lightweight, yet most configurable and advanced PrismJS WordPress integration plugin. Custom fields display (detached) supported.
WP Code Highlight provides clean syntax highlighting and it also provides a code button.
Create and embed code snippets with syntax highlighting.
Style's The Code You Wrap In Pre Tags
This plugin is a syntax highlighter for source code using GeSHi.