A one click installer is available for for Mac OS X 10.4 and above on Intel and PPC and includes PostgreSQL, pgAdmin, pl/Java and the pl/pgsql debugger plugin.
This installer is currently at Release Candidate status.
The one click installer is maintained by Dave Page at EnterpriseDB.
PostgreSQL packages are available for Mac OS X from the Fink Project. Please see the Fink documentation for information on how to install packages.
A list of PostgreSQL packages can be found using the package search tool on the Fink website.
The PostgreSQL Fink packages are maintained by Benjamin Reed.
PostgreSQL packages are also available for Mac OS X from the MacPorts Project. Please see the MacPorts documentation for information on how to install ports.
A list of PostgreSQL packages can be found using the portfiles search tool on the MacPorts website.
The PostgreSQL MacPorts are maintained by Jyrki Wahlstedt and Markus Weissmann.