React and Vue are two popular JavaScript libraries/frameworks for building user interfaces, each with its own set of strengths and characteristics. React, developed by Facebook, is known for its flexibility and a large and active community. It uses a virtual DOM to efficiently update only the parts of a web page that have changed, making it highly performant. React's component-based architecture promotes reusability and maintainability, making it a great choice for complex and large-scale applications. The choice between React and Vue ultimately depends on the specific needs and preferences of the development team and the project at hand.