Sebastian Echeverry

This plugin allows you to use SCSS files directly in wp_enqueue_style. Just add the file to the list of styles and the plugin will compile it when necessary.
The base of this plugin is strongly influenced by the <a href="https://wordpress.org/plugins/wp-scss/" rel="ugc">WP-SCSS</a> code and extracts some ideas from <a href="https://wordpress.org/plugins/sassify/" rel="ugc">Sassify</a>. The goal is to keep the plugin updated with the latest version of <a href="https://packagist.org/packages/scssphp/scssphp" rel="nofollow ugc">scssphp</a>, remove configuration options from the graphical interface, and use the scssphp capabilities to create debug files.
This plugin is not intended to be installed by a conventional user, but to be required by templates or plugins that wish to include SCSS style files and therefore the configuration is expected to be done in the code.

SCSS-Library

Add support for using SCSS style files with wp_enqueue_style.

yonifre

pshitik

A useful plugin for developers writing SCSS. 
The plugin allows you to write SCSS directly on the server (via FTP) without the need for a local compiler.
How It Works?
Choose a source folder for SCSS and a target folder for CSS. 
Write the SCSS code in the file on the source folder, and it automatically creates a CSS file in the target folder.
What’s included?
<ul>
<li>Option for multiple source and destination folders.</li>
<li>Allows you to set a folder in the entire wp-content space.</li>
<li>Performance – only when one of the source files change – it re-compiling itself.</li>
<li>After development you can turn off / delete the plugin without fear, and all the files are stay where they were.</li>
<li>Allows you to develop a theme and plugin at the same time.</li>
</ul>
Example:
source: themes/your-theme/assets/scss/style.scss
<pre>
body {
 color: black;
 .main {
 background: red;
 }
}
</pre>
target: themes/your-theme/assets/css/style.css
<pre>
body {
 color: black;
}

body .main {
 background: red;
}
</pre>
— pay attention! 
If the file already exists in the destination folder – it will be overwritten by the SCSS file

Lenix scss compiler

i found this plugin very useful when i need to compile a sass to css by just few click without getting out wordpress workspace.
when i deactivate the plugin compiled files still in directories.
AAA+++ RATE.



Very helpful plugin

An excellent way to write Scss in wordpress

SCSS-Library vs Lenix scss compiler