D dbt Labs (Fivetran + dbt Labs) · ETL/ELT & orchestration
In-depth entry SQL-first transformation framework that compiles templated models, tests and documentation into warehouse tables; open-source Core plus a commercial platform
Apache-2.0 Open source Freemium Local Self-hosted Nov 2, 2026M Oracle · Relational databases
Oracle's widely deployed open-source relational database server, offered as a GPL community edition and commercial enterprise and cloud editions
GPL-2.0-only WITH Universal-FOSS-exception-1.0 Open source Free Self-hosted BrokenN Neon (Databricks) · Relational databases
Serverless PostgreSQL service with separated storage and compute, instant database branching and scale-to-zero, now part of Databricks
Apache-2.0 Freemium Paid Nov 2, 2026