McObject by Roberto Zicari · Published January 1, 2009 · Updated February 16, 2014 Download an open source / evaluation copy of the Perst™ embedded database for Java or .NET. LINK
OO7J benchmark February 1, 2010 by Roberto Zicari · Published February 1, 2010 · Last modified February 16, 2014
Caché Post-relational Database January 1, 2010 by Roberto Zicari · Published January 1, 2010 · Last modified May 9, 2014
Perst. Open Source, Object-Oriented Embedded Database January 1, 2009 by Roberto Zicari · Published January 1, 2009 · Last modified March 12, 2019