Abstract. Engaging end-users and user communities to take an active part in the cocreation, evolution, and appropriation of modern, interactive systems has become an increasingly important issue over the last years. Bringing together existing research and experiences as well as new challenges such as long-term, large-scale, or highly distributed stakeholders has led to the notion of Open Design Spaces (ODS) to frame and reflect current developments of distributed co-design. Several, formerly often separated strands of research covering different aspects of these challenges have emerged and led to a growing community of researchers and practitioners building on concepts such as Participatory Design, Meta-Design, and End-User Development. The 2nd International Workshop on Open Design Spaces (ODS 2010) focused particularly on social aspects and community co-creation in Open Design Spaces. 5 Proceedings of the 2nd International Workshop on Open Design Spaces (ODS 2010) International Report...