DbSchema - DbSchema - Visual Database Design & Management Tool
Diagramo - Diagramo is an online flowchart software - diagrams (create, edit and share)
SAP PowerDesigner - SAP PowerDesigner: Enterprise Architecture tools for digital transformation success
UML Designer - UML Designer provides a set of common diagrams to work with UML 2.5 models.
pgModeler - Open source data modeling tool designed for PostgreSQL. No more DDL commands written by hand. Let pgModeler do the job for you!
ARIS Express - ARIS Express is based on the proven ARIS methodology and industry standards.