PostgreSQL is an advanced open source object-relational database with strong SQL compliance, ACID transactions, extensibility, and robust indexing and replication options.

21.9k stars5.9k forkslast commit Actively maintained
Microsoft SQL Server is a relational database management system for storing, querying, and managing structured data. It provides ACID transactions, T-SQL querying, indexing, stored procedures, replication, high availability, security features, and analytics integration for enterprise applications.
PostgreSQL is an advanced open source object-relational database with strong SQL compliance, ACID transactions, extensibility, and robust indexing and replication options.

21.9k stars5.9k forkslast commit Actively maintained
MySQL is an open source relational database for SQL-based transactional and analytical workloads, supporting replication, high availability, and clustering options.

12.4k stars4.3k forkslast commit Actively maintained
Every option on this page is open source and free to run on your own hardware, so you own the data and there is no subscription to cancel. 2 of 2 shipped a commit in the last six months. In exchange you take on hosting, backups and updates yourself.
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