Invited Talks -- End-User Development and Meta-design: Foundations for Cultures of Participation -- What Is End-User Software Engineering and Why Does It Matter? -- Refereed Papers -- Mutual Development: A Case Study in Customer-Initiated Software Product Development -- Appropriation Infrastructure: Supporting the Design of Usages -- Supporting End Users to Be Co-designers of Their Tools -- Improving Documentation for eSOA APIs through User Studies -- End-User Development of Enterprise Widgets -- End-User Development for E-Government Website Content Creation -- LWOAD: A Specification Language to Enable the End-User Develoment of Coordinative Functionalities -- Shaping Collaborative Work with Proto-patterns -- Web Design Patterns: Investigating User Goals and Browsing Strategies -- Males' and Females' Script Debugging Strategies -- Hypertextual Programming for Domain-Specific End-User Development -- Fast, Accurate Creation of Data Validation Formats by End-User Developers -- Refereed Notes -- Cicero Designer: An Environment for End-User Development of Multi-Device Museum Guides -- Observing End-User Customisation of Electronic Patient Records.

This book constitutes the refereed proceedings of the 2nd International Symposium on End User Development, IS-EUD 2009, held in Siegen, Germany in March 2009. The 12 revised full papers presented together with 2 invited talks and 2 refereed notes were carefully reviewed and selected. The papers report latest advances in the field of "End User Development" (EUD) such as collective understanding and sense-making of use problems and solutions, the interaction among end users with regard to the introduction and diffusion of new configurations, or delegation patterns that may also partly involve professional designers.