Are there any alternatives to SQL Server Analysis Services on the Windows x64 platform? I'm vaguely curious, because I haven't heard of any (though admittedly I haven't looked very hard).
Basically, a product that allows multi-dimensional cubes and querying those to generate reports (though the generation and presentation of those reports is a separate concern).
I'm not too familiar with the terms used by this set of products; is "column-oriented database" what I'm after?
Update: I'm interested in open-source products as well as commercial ones.