Why is PostgreSQL so popular?

features and performance as well as scalability make it a proper alternative for applications where traditionally Oracle DB was hard to replace. its more recent features for Key-Value-Storage (JSON / JSONB column type) make it an alternative to NoSQL-databases. PostgreSQL supports clustering / Master-Slav.

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Is Postgres free to use?

PostgreSQL is absolutely free to use, forever . All you need to do is download the database, install it, and start using it. … There are no ‘editions’ of PostgreSQL. All features are available for you to use in the community version, which is free, forever.

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