Computer-aided software engineering (CASE) tools are important aids in supporting the building, changing, and maintenance of different types of large models in the area of business and information systems development, in order to maintain quality and consistency at a satisfactory level. The aim of the Swedish Institute for Systems Development (SISU) was to help the public sector as well as Swedish business and industry introduce modern methods and tools when they develop information systems for their processes. Founded in 1984, SISU has worked vigorously to develop and maintain information systems and tools. Various modeling techniques often support system development methods to achieve different types of results addressed by the method. Computer-based tools to help users reach a certain level of quality can effectively aid the use of modeling techniques. The tools must be flexible in order to enable in-use learning, change of methods, and the modeling techniques themselves. RAMATIC was one of the world’s first meta-CASE tools. The meta level of the tool allows adapting to change in representation and functionality without programming.