AngularJS is a widely adopted framework for web application development, especially for building rich single-page applications (SPAs) using TypeScript. Developed and maintained by Google, it features an architecture based on Model-View-Controller (MVC) and provides essential capabilities like bi-directional data binding, dependency injection, and integration with RESTful APIs. The framework is suited for both mobile and desktop platforms, making it a popular choice for developers looking to create dynamic and responsive web applications.