Angular is an open source web application framework written in TypeScript, and is a popular choice for enterprise web applications. It is component-oriented and has a more opinionated approach than React. It also offers a wide variety of features such as routing, form validation, and powerful templating. Angular also has a large library of components and modules, making it easy to build complex applications quickly.
In conclusion, React is a powerful library for web and mobile application development, but there are other options available that may be better suited to specific use cases. Vue.js is lightweight and easy to learn, while Angular provides a more robust solution for enterprise applications. Finally, Svelte is focused on performance and provides a powerful toolkit for developers. Ultimately, the best library to use depends on the needs of the project.