Angular JS

AngularJS is a very powerful JavaScript Framework. It is used in Single Page Application (SPA) projects. It extends HTML DOM with additional attributes and makes it more responsive to user actions. AngularJS is open source, completely free, and used by thousands of developers around the world. AngularJS version 1.0 was released in 2012 by Miško Hevery.AngularJS is a JavaScript framework.
It can be added to an HTML page with a <script> tag.

MongoDB

MongoDB is an open source document based non relational database.It's the most popular non-relational database. It's an object relational database.Uses spider Monkey java script engine.