Headless Tree is a highly customizable and accessible tree component library for React, supporting features such as drag-and-drop, search, renaming, and extensive keybindings. It provides a simple integration with a flat structure to optimize performance and accessibility while allowing users to manage tree state and behavior flexibly. The library is currently in beta and offers a lightweight bundle size with tree-shaking capabilities for optimal performance.

A customizable React Native calendar component is provided through the react-native-calendars package, which works on both Android and iOS without the need for native code. It features date marking, style customization, accessibility support, and examples for easy integration into projects.