This book, as the fourth volume of its series on Computer-Supported Cooperative Work in Design, includes 60 articles that are the expanded versions of the papers presented at CSCWD 2007. The book is organized in topical sections on CSCW techniques and methods, collaborative design, collaborative manufacturing and enterprise collaboration, agents and multi-agent systems, Web services, Semantic Web, and Grid computing, knowledge management, security, privacy, and trust in CSCW systems, workflow management, e-learning, and other applications.