This dissertation analyses two different paradigms used for the development of a software product, Operating Systems. The targets of research are two groups that operate in very different ways, Microsoft Corporation and the Linux Community. Through the observation of the strategies and methodologies used by these actors in their work, and taking into account the constraints to which they are subject, assesses, from a dynamic perspective, the relative strengths and weaknesses of their competing paradigms. In the dissertation I will analyse the efficiency of the development processes that they have adopted for the design, improvement and enhancement of their products. A theoretical model based on Giovanni Dosis "Technological Paradigms" framework, incorporating institutional, industrial, social and cultural aspects, is constructed and specifically adapted to the software industry case. The private management of technology issues considered during the analysis of the development processes inside different organisations are linked to questions having to do with the evolution of high technology, networked, markets. This analysis lends to assessment of some rationales and potential strategies for public intervention in the Operating Systems industry, taking into account some relevant concerns that have been raised about competitive issues and dominant position in this market, one of strategic importance for the future development of the Information Society

This review would not have been possible without the cooperation of a large number of individuals and organisations. The authors are grateful to the health professionals, homelessness professionals and others who gave up their time to be interviewed for the review. We would also like to thank all those individuals within the Health Boards, local authorities and the voluntary sector who contributed to the review by sending us research reports, strategic plans and information about their services and on health and homelessness in their area. We would also like to thank Donna MacKinnon and Gary Wilson of NHS Health Scotland and Sue Irving, the Health and Homelessness Co-ordinator for Scotland for their help and support with the research.