Omniscope DataManager workspace currently supports direct connections to Microsoft Analysis Services and some other MDX-compatible mutli-dimensional cube structures from other vendors.
MS SQL Server Analysis Services (SSAS) example [1]
Recent versions of Microsoft SQL Server 2008 includes Reporting Services (SSRS) and Analysis Services (SSAS).
Links:
[1] http://kb.visokio.com/ms-ssas-cube-example