I have not heard of this before until today where they have made some headlines in the blogs that I read.  This is an open source business intelligence tool that includes a server, developer, and an ETL tool.  Of course the have the paid model which allows you some support and access to some developed applications to run this stuff but this sounds like a solid idea that might take off really well.  It has a J2EE background and a JBoss server behind it.