libreact

libreact is a collection of reusable React components and utilities — described as a “standard library for React projects” — that aims to simplify and standardise common patterns in React development. The library is modular: you can import specific modules such as withState, withToggle, mock, loadable, lazy, flipflop, withValue, List, Map, sensors, toggles and more. Many components are isomorphic (work in browser and server) and some even support React Native. It comes with documentation and storybook examples, making it useful for developers who want ready-to-use building blocks instead of reinventing common hooks or patterns. The license is Unlicense, which means fully open and free to use. With ~2.6k stars, it has a fair level of traction.