glamorous is React component styling solved with an elegant (inspired) API, small footprint (<5kb gzipped), and great performance (via glamor). It has a very similar API to styled-components and uses similar tools under the hood (glamor).
Riot lets you build user interfaces with custom tags using simple and enjoyable syntax. It uses a virtual DOM similar to React but faster. Riot is very tiny compared to industry standards. We think there is a clear need for another UI library.
A UI library that allows you to break your application into components that are self-contained and describe how the application view changes over time and in response to user actions. Marko uses the HTML-JS syntax, rather than the JSX syntax offered for React.
Semantic UI React is the official React integration for Semantic UI: jQuery Free; Declarative API; Augmentation; Shorthand Props; Sub Components; Auto Controlled State.