The Open Source Database Benchmark by Roberto Zicari · Published January 1, 2005 · Updated February 16, 2014 PolePosition on SourceForge Open source benchmark that helps to assess performance implication of using ODBMSs, RDBMSs and ORMs. LINK
EyeDB Object Oriented Database Management System January 1, 2009 by Roberto Zicari · Published January 1, 2009 · Last modified February 16, 2014
ConceptBase January 1, 2008 by Roberto Zicari · Published January 1, 2008 · Last modified February 16, 2014
GLASS a free ODBMS for the Seaside web framework January 1, 2009 by Roberto Zicari · Published January 1, 2009 · Last modified February 16, 2014