This volume gives the proceedings of an international workshop on software engineering environments and public tool interfaces. There was discussion of how tools obtain access to services provided by other tools in the environment and how they communicate and exchange information.

Summary.- Report on the process session at chinon.- An introduction to the IPSE 2.5 project.- TRW's SEE sage.- MASP: A model for assisted software processes.- Goal oriented decomposition — Its application for process modelling in the PIMS project.- A metaphor and a conceptual architecture for software development environments.- Configuration management with the NSE.- Experiments with rule based process modelling in an SDE.- Principles of a reference model for computer aided software engineering environments.- An overview of the inscape environment.- Tool integration in software engineering environments.- The PCTE contribution to Ada programming support environments (APSE).- The Tooluse approach to integration.- An experimental Ada programming support environment in the HP CASEdge integration framework.- Experience and conclusions from the system engineering environment prototype PROSYT.- Issues in designing object management systems.- Experiencing the next generation computing environment.- Group paradigms in discretionary access controls for object management systems.- Typing in an object management system (OMS).- Environment object management technology: Experiences, opportunities and risks.- Towards formal description and automatic generation of programming environments.- Use and extension of PCTE : The SPMMS information system.- User interface session.- CENTAUR: Towards a “software tool box” for programming environments.- List of participants.