Sass - Syntatically Awesome Style Sheets
jQuery - The Write Less, Do More, JavaScript Library.
PostCSS - Increase code readability. Add vendor prefixes to CSS rules using values from Can I Use. Autoprefixer will use the data based on current browser popularity and property support to apply prefixes for you.
React Native - A framework for building native apps with React
Stylus - EXPRESSIVE, DYNAMIC, ROBUST CSS
Babel - Babel is a compiler for writing next generation JavaScript.