Client/server applications are of increasing importance in industry; they are a significant first step towards a global distributed processing model. A very recent response to this trend is the Distributed Computing Environment (DCE) of the Open Software Foundation (OSF), the emerging new industry standard for distributed processing. The papers in this volume discuss the client/server approach based on DCE, illustrating and analyzing the functionality of important DCE components and applications. A number of contributions also focus on new models beyond traditional client/server processing and beyond DCE. The papers in this volume were presented at the International Workshop on the OSF Distributed Computing Environment, held in Karlsruhe, Germany, October 7-8, 1993. Following an introductory chapter, the contributions are grouped into parts on DCE analysis and comparison, application support, methods and tools, RPC extensions, and object-based systems.