Database Design: DbWrench
by The EditordbWrench is a cross platform, java-based database design application available for Mac OS X, Windows, Linux and others.
From MacUpdate’s description of dbWrench:
DbWrench is a multi vendor, cross platform database design and round-trip engineering software. It’s features include: a graphic entity relation diagram (ERD) designer, ability to forward and reverse engineer databases, a syntax highlighting SQL query editor, and support for many of today’s most popular databases.

