Taking advantage of itsexperience in European computer assisted training systems, QUANTOS proceeds to the design and development of e-courses and virtual libraries on every statistical issue under clients' request. The organization of such systems includes the specification (functional and non-functional) of the system and its components, the definition of e-modules, the construction of appropriate templates as well as the evaluation and verification of the attained service. Our ultimate aim is the successful integration of all-purpose material with groupware technologies.