We saw the first signs of React in 2010 in the form of an open-sourced code released by Facebook. It was formally introduced in 2013. The sole purpose of React was to divide UI (User Interface) into reusable collections of components. This simplified the development process of visual interfaces in web apps. As opposed to Angular, Tech giants like Instagram and Facebook are using React.
React is the first choice of most custom software development companies nowadays, looking to develop native applications.