MS-Exchange® and IBM Lotus Domino Integration in Liferay! NABUCCO Groupware is an integration layer that offers an enterprise quality, deep integration of multiple well known and widely used groupware applications such as Microsoft Exchange ® or those from IBM ® into your Liferay Enterprise Portal. In addition to the integration layer, NABUCCO Groupware provides a set of fully native portlets for Liferay to empower your users with a fully synchronized bidirectional interaction with their mail, appointments, personal contacts and tasks directly in the portal interface.