Subject DbVisualizer tool works with Firebrd on Linux, Solaris, OS X, and Windows
Author Rick Fincher
Hi All,

In case you are looking for a tool to help with building Firebird databases
on Linux, Solaris, Mac OS X, and Windows, DbVisualizer works well with
Firebird using the JayBird jdbc driver.

The basic product is free, or you can get an advanced version with support
for $79 USD.

The link to Minq software is:

DbVisualizer is downloadeable from there. A feature matrix is also online

A lot of nice tools like this are available for Firebird but not many
support all the major OS's.