Trionic Labs

SASS is a programmable approach to stylesheets which really adds some cool features. It can make a stylesheet easier to read, easier to update and also adds some powerful features like functions, variables and imports. (See http://sass-lang.com/docs/yardoc/file.SASS_REFERENCE.html for more details.)
This plugin enables any WordPress Theme to use SASS stylesheets. In a wordpress theme, the comments at the top of style.css are used to define the theme. For this reason, this plugin will not allow a .sass or .scss file named ‘style’.

WordPress SASS

This plugin provides automated SASS stylesheet generation.

WebMaestro.Fr

Write SASS, edit your variables and compile your stylesheet from your dashboard.
<a href="http://webmaestro.fr/sass-compiler-wordpress/" rel="nofollow ugc">Read the documentation</a>
<ul>
<li>
Register and enqueue your SASS sheets the same way you would do for your CSS.
<pre><code>`
</code></pre>
wp_enqueue_style( ‘my-sass-handle’, ‘http://example.com/css/mystyle.scss’, $deps, $ver, $media ); 
 `
</li>
<li>
Configure the plugin with the <code>sass_configuration</code> filter.
Configuration of the plugin is optional, but you should at least register your variables if you are using a CSS framework.
</li>
<li>
Set a SASS variable value
<pre><code>`
</code></pre>
sass_set( $variable, $value ); 
 `
</li>
<li>
Get a SASS variable value
<pre><code>`
</code></pre>
sass_get( $variable ); 
 `
</li>
</ul>
You will most likely use these functions in your theme’s <code>functions.php</code>.
The plugin uses <a href="http://leafo.net/scssphp/" rel="nofollow ugc">the scssphp Compiler</a>.

SASS Compiler

SASS compiler for WordPress. Allows you to write and compile SASS, and to edit style variables straight into your WordPress dashboard.

WordPress SASS vs SASS Compiler