Npm scripts and forget other managers

Gulp, Grunt, Brokoli, Brunch, Bower maybe you can forget.

You can use directly npm command line scripts to get the same. These are the favorites scripts:

autoprefixer, browser-sync, clean, 
eslint, imagemin-cli, node-sass, 
onchange, npm-run-all, postcss-cli,
svgo, svg-sprite-generator, uglify-js