Glom

Glom is a GUI that allows you to design design database systems.

The design is loosely based upon FileMaker Pro, with the added advantage of separation between interface and data. It attempts to provide a simple generic framework sufficient to implement most database applications. These systems normally consists of lots of repetitive, unmaintainable code.

Glom-specific data such as the relationship definitions is saved in the Glom document. Glom uses the PostgreSQL database backend but it can not edit databases that it did not create, because it uses only a simple subset of Postgres functionality.