JRubik is a set of tools for navigating and reporting over OLAP Datasources, mainly Mondrian and XMLA servers. This project is based on the components developed by the JPivot project.
OLAP Query Designer is a fork of JRubik, and will incorportate an all new interface and query designer. I allows querying of OLAP Datasources like Mondrian, and is based around JPivot and the Pentaho project.