MongoDB

MongoDB is a free and open-source document-oriented database application that runs on multiple platforms. The tool, classified as a NoSQL database application, works with JSON-like documents and schemas. It offers a comprehensive set of GUI features to anyone who utilizes the application, including database developers and DBAs. Key features include a fully functional embedded MongoDB Shell, an easy-to-use Map-Reduce operations editor, the ability to create and drop databases, manage collections and their indexes, and manage users and roles. Create unique modern applications that provide a competitive advantage! 

Mongo DB Enterprise includes the Enterprise Server app as well as a carefully curated suite of additional software, support, certifications, and other services. More than one-third of the Fortune 100 rely on MongoDB Enterprise Advanced to power mission-critical applications. MongoDB Professional has access to the app's 24/7 support team, Cloud Manager, the most comprehensive monitoring and administration platform, and Mongo DB Compass, a powerful GUI for effortlessly visualizing your schema and exploring your data. 

Note: You can either try for free after signing up or buy the plans. 

Features & Highlights 

Expressive Query Language with Secondary Indexes. 
Access and alter your data in advanced ways right out of the box. 

Strong Consistency 
Provide your users with the most recent copy of the data. 

Enterprise Management and Integration 
Make your database operational with enterprise-grade security, automation, monitoring, and integrations into your existing IT infrastructure. 

Flexibility 
Improve productivity and expedite iteration by using a data model that can rapidly adapt to changes in your apps. 

Scalability and Performance 
Scale horizontally to achieve remarkable performance at gigantic scale: millions of operations per second, hundreds of billions of documents, petabytes of data. 

Always-on, global deployments. 
Replicate your data across geographical regions to create highly available systems that deliver a consistent, high-quality experience to people all around the world.