React was created by Jordan Walke, a software engineer at Facebook who was influenced by XHP, a HTML component framework for PHP. It was first deployed on Facebook’s newsfeed in 2011 and later on Instagram.com in 2012. It was open-sourced at JSConf US in May 2013.
React Native, which enables native Android, iOS, and UWP development with React, was announced at Facebook’s React.js Conf in February 2015 and open-sourced in March 2015.
On April 18, 2017, Facebook announced React Fiber, a new core algorithm of React framework library for building user interfaces. React Fiber was to become the foundation of any future improvements and feature development of the React framework.
Although initially released in 2013, ReactJS is not well known to you unless you are a software developer.
We hope this helps 🙂