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]
Syntax Highlighter supporting multiple languages, themes, fonts, highlighting from a URL, or post text.
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.
A plugin to easily present source code on your site with syntax highlighting and formatting (as seen in code editors, IDEs).
Style's The Code You Wrap In Pre Tags
This plugin is a syntax highlighter for source code using GeSHi.