Models and paradigms of interaction.- Architectural convergence and the granularity of objects in distributed systems.- Separation of distribution and objects.- Integrating structural and operational programming to manage distributed systems.- Concurrency and Choices in implementing the coordination language LO.- Toward languages and formal systems for distributed computing.- Decomposing and recomposing transactional concepts.- DPL to express a concurrency control using transaction and object semantics.- A reflective invocation scheme to realise advanced object management.- Abstracting object interactions using composition filters.- Object-oriented distributed programming in BETA.- A flexible system design to support object-groups and object-oriented distributed programming.- Distributed programming in GARF.- Object-oriented extendibility in Hermes/ST, a transactional distributed programming environment.