React is a JavaScript library for creating user interfaces by Facebook and Instagram. Facbook built React to solve one problem: building large applications with data that changes over time.
There are a number of frameworks out there including Angular, Node and Bootstrap (amongst others). I’ve been talking to a few people about React (sometimes styled React.js or ReactJS) and I’m hearing good things.
Here is a short but useful video that compares React with Angular that might be useful.
React Vs Angular
