Alessandro Carbone

How many times have you wished to minify in a clean way all the stylesheets and scripts of a WordPress website?
AssetsMinify takes every CSS and JS asset included using <code>wp_enqueue_style()</code> and <code>wp_enqueue_script()</code>, merges and minifies them.
You can also use AssetsMinify to create your WP theme using Compass / Sass / Less without configuring any <code>config.rb</code> or that kind of stuff.
AssetsMinify is based on Assetic library.
<a href="https://github.com/acarbone/AssetsMinify" rel="nofollow ugc">Fork me on Github</a>.

AssetsMinify

Use Compass, Sass, Less, Stylus, CoffeeScript (and more ...) to develop your themes and minify your stylesheets and JavaScript.

The Jake Group

This plugin has everything you need to run LESS in development and convert it to CSS for production.
Have an issue? This plugin is a work in progress, and we’d love your feedback. The official plugin repository is hosted on <a href="https://github.com/the-jake-group/wp-less-compiler" rel="nofollow ugc">GitHub</a>. Look here for the most up to date development versions. You can also use the <a href="https://github.com/the-jake-group/wp-less-compiler/issues" rel="nofollow ugc">issue tracker</a> to let us know if you have any problems or suggestions.
<h3>Features</h3>
<ul>
<li>Display CSS to visitors while showing LESS to administrators</li>
<li>Compile and serve a CSS file generated from LESS</li>
<li>Develop in LESS right in the browser</li>
</ul>

WP Less Compiler

Compile LESS to CSS on the fly, or generate a dedicated CSS file from LESS to serve to your visitors.

AssetsMinify vs WP Less Compiler