ER Assistant for Mac

Navicat Data Modeler is a powerful and cost-effective database design tool which help users build high-quality logical and physical data models. It supports various database systems, including MySQL, Oracle, SQL Server, PostgreSQL and SQLite.

pgModeler is an open source data modeling tool designed for PostgreSQL. No more DDL commands written by hand. This software reunites the concepts of entity-relationship diagrams and the features that PostgreSQL implements as extensions of SQL...

SQLEditor is intended for editing or creating SQL databases. The application has a nice interface, in many ways different from those of other more technically-looking tools of the same type.

KwikUML is, as its name suggests, a tool to quickly build UML models of ActionScript and PHP classes and interfaces, as well as, SQL Entity Relationship Designs (ERDs).

Astah Professional is an intuitive platform that creates highly-stimulating presentation tools that increases productivity and understanding through a wide variety of diagrams.

DRAKON Editor is a free tool for authoring DRAKON flowcharts. It also supports sequence diagrams, entity-relationship and class diagrams. With DRAKON Editor, you can quickly draw diagrams for: - software requirements and specifications.