Spectrum UI components in React
Emoji Popup for React Native
Persist and populate react-hook-form form using storage of your choice
React component library for creating chat interfaces
Drag-and-drop-enabled version of react-querybuilder (DnD-library-agnostic)
A package of Essential JS 2 input components such as Textbox, Color-picker, Masked-textbox, Numeric-textbox, Slider, Upload, and Form-validator that is used to get input from the users. for React
The core test runtime that executes on React Native devices, providing Jest-compatible APIs (describe, it, expect) and managing test collection, execution, and result reporting in native environments.
React component for syntax highlighting

A small React hook to turn elements into fully renderable & editable content surfaces, like code editors, using contenteditable (and magic)
Manage state with style in React
  
Blazing fast zero-runtime CSS in JS library
A generic library implementing hot reload for React components without unmounting or losing their state.
@material-tailwind/react is an easy-to-use components library for ReactJS & Tailwind CSS inspired by Material Design.
The React Native CLI tools
Modern and scalable routing for React applications
Modern and scalable routing for React applications
React Native module for real-time screenshot detection on Android and iOS
Spectrum UI components in React
Container Query for React Component
React 18 Streaming. Full-fledged & Easy.
A simple React component that lets you listen for when you have scrolled to the bottom.