Java SQL database engine (utilities)
office productivity suite -- database
Database connectivity drivers for LibreOffice
office productivity suite -- database (no GUI variant)
Firebird SDBC driver for LibreOffice
HSQLDB SDBC driver for LibreOffice
The World's Most Advanced Open Source Relational Database
front-end programs for PostgreSQL 13
PL/Perl procedural language for PostgreSQL 13
PL/Python 3 procedural language for PostgreSQL 13
PL/Tcl procedural language for PostgreSQL 13