Developer Community db4o open source object database, native to Java and .NET

Quick Download

Production Release

		db4o 7.12 for Java (zip, 42.9 MB)
		db4o 7.12 for .NET 3.5 (msi, 24.8 MB)

Development Release

Latest db4o (8.0)

(with registration)

Download Center

Production Recommended for development with db4o

db4o for Java, version 7.12.156.14667 ZIP (released 7/20/2010)
db4o for .NET 2.0, version 7.12.156.14667 MSI (released 7/20/2010)
db4o for .NET 2.0, version 7.12.156.14667 ZIP (released 7/20/2010)
db4o for .NET 3.5, version 7.12.156.14667 MSI (released 7/20/2010)
db4o for .NET 3.5, version 7.12.156.14667 ZIP (released 7/20/2010)
db4o Replication System for Java, version 7.12.156.14667 ZIP (released 7/20/2010)
db4o Replication System for .NET, version 7.12.156.14667 ZIP (released 7/20/2010)

Development Beta release, Ideal for testing new features

db4o for Java, version 8.0.156.14687 ZIP (released 7/20/2010)
db4o for .NET 2.0, version 8.0.156.14687 MSI (released 7/20/2010)
db4o for .NET 2.0, version 8.0.156.14687 ZIP (released 7/20/2010)
db4o for .NET 3.5, version 8.0.156.14687 MSI (released 7/20/2010)
db4o for .NET 3.5, version 8.0.156.14687 ZIP (released 7/20/2010)
db4o Replication System for Java, version 8.0.156.14687 ZIP (released 7/20/2010)
db4o Replication System for .NET, version 8.0.156.14687 ZIP (released 7/20/2010)
db4o for .NET 4.0, version 8.0.156.14687 MSI (released 7/20/2010)
db4o for .NET 4.0, version 8.0.156.14687 ZIP (released 7/20/2010)

Stable Recommended for product shipment

db4o for Java, version 7.4.155.14653 ZIP (released 7/20/2010)
db4o for .NET 2.0, version 7.4.155.14653 MSI (released 7/20/2010)
db4o for .NET 2.0, version 7.4.155.14653 ZIP (released 7/20/2010)
db4o for .NET 3.5, version 7.4.155.14653 MSI (released 7/20/2010)
db4o for .NET 3.5, version 7.4.155.14653 ZIP (released 7/20/2010)
db4o Replication System for Java, version 7.4.155.14653 ZIP (released 7/20/2010)
db4o Replication System for .NET, version 7.4.155.14653 ZIP (released 7/20/2010)

Continuous Nightly build for those who like to live on the edge

db4o for Java ZIP (released 1/18/2010)
db4o for .NET 3.5 MSI (released 1/18/2010)
db4o for .NET 3.5 ZIP (released 1/18/2010)
db4o for .NET 2.0 MSI (released 1/18/2010)
db4o for .NET 2.0 ZIP (released 1/18/2010)
db4o for .NET 4.0 MSI (released 6/16/2010)
db4o for .NET 4.0 ZIP (released 6/16/2010)