Reapp - An easier, faster way to build apps with React and JavaScript.
React Boilerplate - Offline-first, highly scalable foundation for your next app
Onsen UI - HTML5 Hybrid Mobile App UI Framework - work with Angular, React, Vue, Meteor & pure JavaScript. Material & Flat design.
Static Site Boilerplate - A better workflow for building modern static websites.
Ionic - Ionic is a cross-platform mobile development stack for building performant apps on all platforms with open web technologies.
Boilrplate - Curated list of boilerplates to help you start your projects