Human Crafters Once Again: Supporting Users as Designers in Continuous Co-Design -- End-User Experiences of Visual and Textual Programming -- Enabling end users to create, annotate and share personal information Spaces -- Identity Design in Virtual Worlds -- Using Meta-Modelling for the Construction of an End-User Development Framework -- End-User Development of Information Visualization -- Resolving Data Mismatches in End-User Compositions -- Co-Production Scenarios for Mobile Time Banking -- Co-evolution of End-User Developers and Systems in Multi-tiered Proxy Design Problems -- Meta-design in Co-located Meetings -- Designed by End Users: meanings of technology in the case of everyday life with diabetes -- Cultures of Participation in Community Informatics: A Case Study -- End-User Development: From Creating Technologies to Transforming Cultures -- Objects-to-think-with-together: Rethinking Paperts fusion of design and use in the age of online sociability -- Lightweight End-User Software Sharing -- Decision-Making Should be More Like Programming -- Automated Test Case Generation in End-User Programming -- Component-Based Design and Software Readymades -- TagTrainer: a meta-design approach to interactive rehabilitation technology.

This book constitutes the refereed proceedings of the Fourth International Symposium on End-User Development, IS-EUD 2013, held in Copenhagen, Denmark, in June 2013. The 13 full papers (45% acceptance rate) and 11 short papers (50% acceptance rate) have been presented at the event. In addition the volume contains two keynote speeches, three doctoral consortia papers, and information on 2 workshops. The papers provide a broad overview of the current state of End-User Development research.