  Together with the development of the Large APEX Bolometer Camera (LABOCA) for
the Atacama Pathfinder Experiment (APEX), a new data reduction package has been
written. This software naturally interfaces with the telescope control system,
and provides all functionalities for the reduction, analysis and visualization
of bolometer data. It is used at APEX for real time processing of observations
performed with LABOCA and other bolometer arrays, providing feedback to the
observer. Written in an easy-to-script language, BoA is also used offline to
reduce APEX continuum data. In this paper, the general structure of this
software is presented, and its online and offline capabilities are described.
