Postgres

Postgres is the world's most advanced open-source object-relational database, engineered for enterprise-level reliability and data integrity.

PostgreSQL (Postgres) is a powerful, open-source object-relational database system: it extends the SQL standard and handles complex data workloads with proven architecture. Its origins trace back to 1986 at UC Berkeley. The platform is fully ACID-compliant and uses Multi-Version Concurrency Control (MVCC) to manage high transaction rates with minimal locking. Key features include robust extensibility, allowing users to define custom data types and functions, plus a vast ecosystem of add-ons like the PostGIS geospatial extender. This focus on reliability and feature depth makes it the top choice for critical applications across all major operating systems.

https://www.postgresql.org/