
PostgreSQL, also known as Postgres, is a free and open-source relational database management system (RDBMS) emphasizing extensibility and SQL compliance. PostgreSQL features transactions with atomicity, consistency, isolation, durability (ACID) properties, automatically updatable views, materialized views, triggers, foreign keys, and stored procedures. It is supported on all major operating systems, including Windows, Linux, macOS, FreeBSD, and OpenBSD, and handles a range of workloads from…
Ranked #3 on "Top 10 Open Source Software Projects Powering the Modern Tech Stack (2026) – Vote Now!". Cast your vote to back or challenge this spot.
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Ranks as high as #3 on some lists — but only #7 here. Fans are divided.
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