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.

fieldofcode

Use <a href="https://github.com/scssphp/scssphp/" rel="nofollow ugc">ScssPhp</a>. to compile scss files on your wordpress install into a single lightweight CSS file. There is an included settings page for configuring directories, error reporting, compiling options, and auto enqueuing.
To keep the page load time to a minimum this plugin only runs the compiler when the scss files have been changed. All compiled files create or alter a matching css file in the chosen directory which remains even if this plugin is disabled so that your site never loses its styles and is always ready for user interaction.

SCSS-4-WP

Use ScssPhp. to compile scss files on your wordpress install into a single lightweight CSS file.  There is an included settings page for configuring d …

WordPress SASS vs SCSS-4-WP