DuckDB
DuckDB Foundation / DuckDB Labs · Analytical engines & OLAP
In-process analytical SQL database that queries Parquet, CSV and Arrow data directly from Python, R, Node or the CLI
MITOpen sourceFreeLocalSelf-hostedNov 2, 2026
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MySQL
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-1.0Open sourceFreeSelf-hostedBroken
PostGIS
PostGIS Project Steering Committee (OSGeo) · GIS & mapping
Spatial extension for PostgreSQL adding geometry, geography and raster types with indexing and hundreds of SQL functions
GPL-2.0-or-laterOpen sourceFreeSelf-hostedNov 2, 2026
PostgreSQL
PostgreSQL Global Development Group · Relational databases
Open-source object-relational database server with a large extension ecosystem (PostGIS, pgvector, TimescaleDB) and broad SQL coverage
PostgreSQLOpen sourceFreeLocalSelf-hostedBroken
Prisma ORM
Prisma Data, Inc. · Web frameworks & UI
TypeScript ORM with a declarative schema language, generated type-safe client and migration tooling, from the company that also offers Prisma Postgres and related hosted services
Apache-2.0Open sourceFreeLocalSelf-hostedNov 2, 2026
SQLite
SQLite Consortium / Hipp, Wyrick & Company · Relational databases
Public-domain embedded SQL database engine that stores a whole database in one file and ships inside most operating systems and browsers
Open sourceOpen sourceFreeLocalNov 2, 2026
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