Open Source OLAP - Mondrian Review

The Bayon Technologies blog has the best review of Mondrian I have seen yet.

Bayon Technologies :: Open Source OLAP: "My overall impressions were positive; it's a good core set of functionality and performs rather well. Like any Open Source project it is an alphabet soup of supporting libraries, environment variables, generators, frameworks, and takes more than the usual 10 minute commercial product install. We're not building a kernel here, but it's not trivial to get the examples up and running. "