Postgresql

First obtain a suitable driver:

• If you are using the Entropy packages by Marc Liyanage then the current build contains everything you need.
  The driver is installed at /usr/local/pgsql/share/java
• If you are using another package then you may need to download the JDBC driver from the Postgresql JDBC site

Then install the driver:

1. Copy the jdbc driver to /Library/Java/Extensions
2. Edit /usr/local/pgsql/data/postgresql.conf so that tcpip_socket = true is set.

   It may be set to false or not be present at all in the default settings

SQLEditor should find this driver automatically