A new intelligent methodology-independent CASE tool is proposed to support information systems development. Although a multitude of object-oriented analysis and design methodologies exist, neither these nor their corresponding CASE environments (i) support the building of integrated information systems, (ii) span the entire object-oriented life cycle, (iii) are customisable, (iv) utilise advanced data presentation techniques, and (v) exhibit intelligent behaviour. The aim of the paper is to address some of these unresolved problems through the development of a new CASE tool. The tool requirements and constraints are identified. A top level tool structure is outlined and different subsystems architecture is further explored and discussed. The intelligent environment and some aspects of the user interface are also addressed