Download an open source / evaluation copy of the Perst™ embedded database for Java or .NET. LINK
Hypertable: Modeled after Google’s Bigtable project, Hypertable is an open source software designed to manage the storage and processing of information on a large cluster of commodity servers, providing resilience to machine and component failures....
Databeans is a fully object oriented persistence framework for java, based on the use of javabeans accessor methods to read/write data on disk in place of in class instance fields, available under GPL. LINK
GemStone Systems GLASS: GemStone, Linux, Apache, Seaside, and Smalltalk. LINK
Advanced object model, object definition language based on ODMG ODL, an object query and manipulation language based on ODMG OQL and programming interfaces for C++ and Java. LINK
Tilburg University ConceptBase is a multi-user deductive and object-oriented database system for meta modeling and method engineering (FreeBSD-style license) LINK
Kazimierz Subieta This project allows you to import any number of XML files to the ODRA store in the M0 store model (no classes). After the import you can ask SBQL queries and observe...
Donghui Zhang, Northeastern University Tutorial including download link for NEUStore – a simple Java package for the construction of disk-based, paginated, and buffered indices. DOWNLOAD (PDF)
Tore Risch, Uppsala University An object-oriented and functional system for querying distributed and heterogeneous data sources. LINK
University of Bonn Provides software tools for geo-scientists to achieve a consistent non-redundunt storage and efficient access for 3D-modelling data. LINK