Material UI is an open-source React component library that implements Google's Material Design. It's comprehensive and can be used in production out of the box.
Number input component that can replace the native number input which is not yet very well supported and where it is, it does not have the same appearance across the browsers. Additionally this component offers more flexible options and can be used for any values (differently formatted representations of the internal numeric value).
A simple, lightweight, fully controlled isomorphic (with SSR support) React.js carousel component. Touch enabled and responsive. With support for autoplay and infinity options. Fully customizable