Wikipedia
EnterpriseDB (EDB) is a privately held company that provides software and services based on the open source database PostgreSQL. EDB develops and integrates performance, security, and manageability enhancements into PostgreSQL to support enterprise-class workloads for its database, EDB Postgres Advanced Server. EDB has also developed database compatibility for Oracle to facilitate the migration of workloads from Oracle to EDB Postgres and support the operation of many Oracle workloads on EDB Postgres.
EDB sells subscriptions to its EDB Postgres Platform with the option of EDB Postgres Advanced Server or PostgreSQL as the database. The platform subscriptions include tool suites, upgrades, support, and maintenance.
EDB was positioned in the Leaders Quadrant in the Gartner Magic Quadrant for Operational Database Management Systems in October 2014 and again in September 2015.