* [Brunch](http://brunch.io/) : [clean-css-brunch](https://github.com/brunch/clean-css-brunch)
* [Grunt](http://gruntjs.com) : [grunt-contrib-cssmin](https://github.com/gruntjs/grunt-contrib-cssmin)
* [Gulp](http://gulpjs.com/) : [gulp-minify-css](https://github.com/jonathanepollack/gulp-minify-css)
+* [Gulp](http://gulpjs.com/) : [using vinyl-map as a wrapper - courtesy of @sogko](https://github.com/jakubpawlowicz/clean-css/issues/342)
* [component-builder2](https://github.com/component/builder2.js) : [builder-clean-css](https://github.com/poying/builder-clean-css)
* [Metalsmith](http://metalsmith.io) : [metalsmith-clean-css](https://github.com/aymericbeaumet/metalsmith-clean-css)