(commercial) A multi-threaded database engine with a rich set of development and administration tools. hot
Baynoon is an object database server that understands and efficiently implements relationships (one to one, one to many, and many to many) between entities using a simple query language. It is written in object-oriented C++ and is intended to be portable.
Divmod Axiom is an object-relational database backed by SQLite, the goal of which is to provide an efficient, non-SQL interface to an existing relational database manager. It provides support for common Twisted practices: an Axiom store is also a Twisted IServiceCollection provider, and an implementation of Twisted's IRealm interface is provided. It makes heavy use of plugins and includes a wall-clock scheduler.
F-LOgic Reasoning In Databases is a deductive object-oriented database prototype employing F-Logic as data definition and query language.
A portable distributed object-oriented database designed to support the maintenance and sharing of knowledge bases.
An Object-Relational Database Management System. GigaBASE inherits most of the features of FastDB, but uses page pool instead of direct mapping of file on virtual memory.
H-PCTE is a distributed object management system (OMS) which is intended to be used as a basis of distributed software development environments (SDE), or, more generally, distributed document editing systems.
A multi-user database management system, supports relational, object oriented, free text and multimedia data with high speed retrieval from massive collections of information.
MongoDB is a high-performance, open soursce, schema-free document-oriented data store that is easy to deploy, manage and use. This network accessible software is written in C++.
An object-oriented database management system program capable of concurrent, multi-client database services on the Internet.
(commercial) A ODBMS compliant with the ODMG 3.0 standard.
There are two Edition: Just for small projects and Enterprise with load-balancing and fault-tolerance features.
Free Just available on website.
(commercial) A database server that is designed for business- and mission-critical applications requiring event driven, real-time responses to data changes, transactional reliability and the option of fault tolerance for continuous availability.
A next-generation object-relational database management system designed for enterprise use.
TokuMX is an open source, high-performance distribution of MongoDB that dramatically improves performance and operational efficiency compared to basic MongoDB. TokuMX is a drop-in replacement for MongoDB and reduces costs associated with development, scaling, and optimization.
(commercial) The Versant database family provides easy development and high performance storage and access for objects in Versant's VDS database and FastObjects databases.
The Versant Open Access Suite of data access and object-relational mapping software has a variety of access protocols such as JDO and SDO, in Java and .NET. The products provide developers with the safe choice, ease of use, and great performance in data access for a variety of relational databases.
Y Object Database Adapter
A Python object database which uses fast and reliable Berkley DB as database backend. In the formal description YODA is transactional, multithreaded Object database for use with Object-oriented language Python. YODA allows you to derive objects from the classes from YODA repository.