Below is a list of the resources that we regularly use in development of data warehousing applications:

Tools and Samples

OWB - Oracle Warehouse Builder
mofeditor.zip - For working with MOF models.
Netbeans Platform - Choose version 3.6 so you can use the MDR Browser.
SQL2JAVA - Generates a RDB persistence layer from an existing DB.
JEdit - For editing XMI files.
CubeModel Source - Code, Tools, and Sample Models

Standards and Specifications

Common Warehouse Metamodel (CWM™)
Java Metadata Interface (JMI)

Articles and White Papers

Dr Dobb's Article (Nov 2006): "Faster Development Through Modeling"
Building a Data Warehouse using the CWM
OMG Presentation (Sep 27, 2006) Faster Development with the CWM
OMG Success Story - Cube Model: MDA Meets Open Source