Declarative routing for React Native applications
The React Chessboard Library
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.
Expo universal module for managing device's screen orientation
Useful hooks for React application
Manage state with style in React
Ironclad Clickwrap React SDK - SDK for easy Ironclad Clickwrap implementations leveraging the Ironclad JavaScript Library & API
Localized relative date/time formatting in React

Drag-and-drop-enabled version of react-querybuilder (DnD-library-agnostic)
Exports svgs from @itwin/itwinui-icons as React Components
A React hook for changing properties or visibility of a component based on css media query

Spectrum UI components in React
Country/region React components for your forms.
Make Your Numbers Pop: Simple and Dynamic Counters for Your UI
React library for building media players
A storybook addon to display react docgen info.
Components relating to form elements in the Garden Design System
React Native iData thermometer
Metro bundler for React Native Harness
Transforms styleName to className using compile time CSS module resolution.
react-native-test-app provides a test app for all supported platforms as a package
A complete package of date or time components with built-in features such as date formatting, inline editing, multiple (range) selection, range restriction, month and year selection, strict mode, and globalization. for React