Workflow: A CORBA Compliant Transactional Workflow System for Internet Applications, S. Wheater, S. Shrivastava and F. Ranno.- A Generic Workflow Environment based on CORBA Business Objects, A. Schill and C. Mittasch. Scaleability: A Scalable Middleware Solution for Advanced Wide-Area Web Services, M. van Steen, A. Tanenbaum, I. Kuz and H. Sips.- A Gossip-Style Failure Detection Service, R. van Renesse, Y. Minsky and M. Hayden.- System Support for Scalable and Fault Tolerant Internet Services, Y. Chawathe and E. Brewer. Availability and Integrity: Highly Available Trading System: Experiments with CORBA, X. Difago, K. Mazouni and A. Schiper.- Integrity Management in GUARDS, E. Totel, Lj. Beus-Dukic, J.-P. Blanquart, Y. Deswarte, D. Powell and A. Wellings.- The Realize Middleware for Replication and Resource Management, P. Melliar-Smith, L. Moser, V. Kalogeraki and P. Narasimhan. ORB Engineering: DIMMA - A Multi-media ORB, D. Donaldson, M. Faupel, R. Hayton, A. Herbert, N. Howarth, A. Kramer,I. MacMillan, D. Otway and S. Waterhouse.- The Implementation of a High Performance ORB over Multiple Network Transports, S.-L. Lo and S. Pope. ORB Architecture: Jonathan: an Open Distributed Processing Environment in Java, B. Dumant, F. Horn, F. Tran and J.-B. Stefani.- An Architecture for Next Generation Middleware, G. Blair, G. Coulson, P. Robin and M. Papathomas.- QuO's Runtime Support for Quality of Service in Distributed Objects, R. Vanegas, J. Zinky, J. Loyall, R. Schantz and D. Bakken. Components: Component Coordination in Middleware Systems, M. Radestock and S. Eisenbach.- Architecturing and Configuring Distributed Application with Olan, R. Balter, L. Bellissard, F. Boyer, M. Riveill and J.-Y. Vion-Dury.- A Framework for Systematic Synthesis of Transactional Middleware, A. Zarras and V. Issarny. Type Safety and Security: Secure Architectures, S. Gibson, S. Gorain, D. Povey and P. Clutterbuck.- Improving Type-Safety in CORBA, S. Crawley and K. Duddy.- Type Checking Stream Flow Endpoints, F. Eliassen and S. Mehus. Mobile Objects: Mobile Java Objects, R. Hayton, M. Bursell, D. Donaldson and A. Herbert.- Javanaise: Distributed Shared Objects for Internet Cooperative Applications, D. Hagimont and D. Louvegnies.- Mole 3.0: A Middleware for Java-Based Mobile Software Agents, J. Baumann, F. Hohl, K. Rothermel, M. Schwehm and M. Strasser. Web Services: Active Cache: Caching Dynamic Contents (Objects) on the Web, P. Cao, J. Zhang and K. Beach.- Saperlipopette!: a Distributed Web Caching Systems Evaluation Tool, G. Pierre and M. Makpangou.- Experience With Top Gun Wingman: A Proxy-Based Graphical Web Browser for the 3Com PalmPilot, A. Fox, I. Goldberg, S. Gribble, D. Lee, A. Polito and E. Brewer. Events: Event-based Distributed Workflow Execution with EVE, A. Geppert and D. Tombros.- An Architecture to Support Storage and Retrieval of Events, M. Spiteri and J. Bates.- Run-time Monitoring of Distributed Applications, X. Logean, F. Dietrich, H. Karamyan and S. Koppenhvfer.- Index of Contributors.- Sponsors.