Angular JS is an open-source web application framework developed by Misko Hevery and Adam Abrons in2009.It’s now maintained by Google. Angular JS is an MVC framework. MVC (Model –View-Controller) is an architectural pattern most frequently used in standard web development framework. Angular JS lets you build well structured, easily testable and maintainable front- end applications.
AngularJS is an open source, completely free, and used by thousands of developers around the world. It is licensed under the Apache license version 2.0.Overall, AngularJS is a framework to build large scale, high-performance, and easy to-maintain web applications