Google's Frontend framework which helps to build Rich, highly fast and responsive single page applications like gmail.
Gmail like Applications
AngularJS helps you build single page applications like Gmail. No more waiting for page reloads. These applications are fast and sleek like desktop apps.
AngularJS makes it easy for you to build realtime applications as it has has two-way data binding. You can program it to update the webpage **without a page reload** as and when the data changes on the backend and is sent to the frontend
AngularJS sticks to convention like MVC, Dependency Injection which make the code highly regularized. This helps you expand your team without acquiring technical debt.