TimerMixin provides timer functions for executing code in the future that are safely cleaned up when the component unmounts
  
ANSI to React Elements
Modern and scalable routing for React applications
Speed Insights is a tool for measuring web performance and providing suggestions for improvement.
React.js integration for honeybadger
TypeScript definitions for react-calendar-timeline
A pure react component to draw a map of world countries. Simple. Free.
TypeScript definitions for react-native-keep-awake
Provides battery information for the physical device, as well as corresponding event listeners.