1. MySQL

    The world's most popular open source database

  2. PostgreSQL

    PostgreSQL is a powerful, open source object-relational database system.

  4. Microsoft SQL Server

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  5. MongoDB

    MongoDB (from "humongous") is a scalable, high-performance, open source NoSQL database.

  6. Amazon RDS

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  8. ArangoDB

    A distributed open-source database with a flexible data model for documents, graphs, and key-values.

  9. Oracle Database

    Discover the world's #1 database and cloud database management products and solutions including the self-driving and fully automated Autonomous Database Cloud 18c.

  10. CouchDB

    HTTP + JSON document database with Map Reduce views and peer-based replication