Where can I find a list of the available extensions for PostgreSQL?
This is a frequently asked question.


Users and SQL calls them "extensions". You add them with CREATE EXTENSION.
They get packaged by distros like Ubuntu as postgresql-contrib or the like.
The docs calls them "Additional Supplied Modules", but "modules" isn't really used anywhere else.  I'm not sure you should ever call anything a module, but it seems to be used here to refer to packaged extensions. Perhaps it's from the days when extensions were just SQL scripts.


You can find the list of PostgreSQL extensions officially supported here.

PGXN.org is a great resource for finding third party modules/extensions/contrib-ie stuff too.