Previous workshops on reflection both in ECOOP and in OOPSLA have pointed out the growing interest and importance of Reflection and Metalevel Architectures in the fields of programming languages and systems (ECOOP'98, OOPSLA'98), software engineering (OOPSLA'99) and middleware (Middleware 2000). Following these workshops but also the conference Reflection'99 held in SaintMalo (France), this workshop has provided an opportunity for researchers with a broad range of interests in meta-level architectures and reflective techniques to discuss recent developments in this field. It has also provided a good test-bed for