XWDB is an XML database integration toolkit for XML, relational, and graph databases. The toolkit includes an XML adaptor for RDBMSs, a graph/XML data store implemented using a RDBMS, and tools for browsing and querying federated databases.

The CVS repository for XWDB and downloads are hosted at sourceforge. Javadocs are available for Release 1.1.2 and Release 1.2.0.