1. The world's most popular open source database

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

  3. Microsoft Azure is an open, flexible, enterprise-grade cloud computing platform. Move faster, do more, and save money with IaaS + PaaS. Try for FREE.

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

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

  7. Microsoft Access is a DBMS that combines the relational Microsoft Jet Database Engine with a graphical user interface.

  8. IBM Db2 is database software that can reliably handle multiple workloads and the latest version of Db2 is optimized to provide extreme performance while lowering costs.

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