PostgreSQL Adapter for DataMapper

An Experimental Version of the squealer gem http://github.com/delitescere/squealer/

A Ruby DSL for exporting MongoDB to MySQL or PostgreSQL. You don't need to install both, just one. Use EXPORT_DBMS=[mysql|postgres] environment variable to specify the appropriate adapter.

DataMapper plugin providing HSTORE and ARRAY datatype support for postgres

Postgres Datastore for Hyperion

RDF.rb extension providing a DataObjects storage adapter.