MongoDB is one of the most popular and robust NoSQL databases.

MongoDB is a document-oriented database that enables high-speed access to data, even when the number of documents grows very large. The database offers many features that enable flexible schema design and queries, automatic scaling and high availability,and native map/reduce support for processing big data sets.

MongoDB supports many popular development frameworks including Node.js, .NET, PHP, Python, Java, Ruby and others. MongoDB is easy to install and get started with. It uses the JSON data model