I ran into the interesting blog of Chris Webb who has been working on Microsoft BI as well as on open source. He mentions some other open source tools, besides Pentaho and Jasper he has been working on.
- Olap4j this looks more like a development environmen, but Chris claims it also can connect to Microsoft Analysis Services 2005. And since I am also quite familiar with the Microsoft suite, this can be great.
- Cubulus, check out the demo at http://alxtoth.webfactional.com/, Cubulus is an analytic engine + slice&dice web interface on top of relational database (MySQL at the moment)
