Next.js - Framework for server-rendered or statically-exported React apps.
hapi - Rich framework for building applications and services.
Koa - Smaller, more expressive, and more robust foundation for web applications and APIs.
popmotion - Functional, reactive animation library.
impress.js - Presentation framework based on the power of CSS3 transforms and transitions.
micro github - Tiny microservice that makes adding authentication with GitHub to your application easy.
mdxc - Use React Components within Markdown.
ReLaXeD - Create PDF documents using web technologies.
Dragula - Drag and drop so simple it hurts.
Hammer.js - Multi-touch gestures.
emittery - Simple and modern async event emitter.