MongoDB is a cross-platform document-oriented database program. Classified as a NoSQL database program, MongoDB uses JSON-like documents with optional schemas. MongoDB is developed by MongoDB Inc. and licensed under the Server Side Public License.
Express is the most-often-used framework for flexible Node.js web application development. It facilitates HTTP requests from mobile and web app users as well as the views they see in response.
Whether you want to develop browser and web-based apps or mobile apps, AngularJS is known for its flexibility, is ideal for building apps of all types.