Rated 4.5 stars on WordPress.org.
Powering over 100k+ WordPress websites.
Works great with:
Utilizes the SASS sources from all assets as well as own SASS files. Makes it easy to replace colors, fonts, stylings etc.
Comes with npm support to manage all the dependencies. Just one command in your terminal is needed to update all assets.
Comes with Gulp as task runner and one pre-made gulpfile.js with some default tasks. For example to compile SASS to CSS.