Persistenz-Framework für ein Mapping zwischen Java-Objekten, XML-Dokumenten, SQL&OQL-Datenbanken und LDAP-Verzeichnissen (OpenSource-Produkt von Apache). "Torque is a persistence layer. Torque includes a generator to generate all the database resources required by your application and includes a runtime environment to run the generated classes. Torque was developed as part of the Turbine Framework. It is now decoupled and can be used by itself."