This book is a collection of articles, pubished in honor of Ugo Montanari on the occasion of his 65th birthday, contains 43 papers, written by friends and colleagues, all leading scientists in their own right, who gathered at a symposium held celebrations on June 12 2008, in Pisa. This volume consists of seven sections, six are dedicated to major areas of research that Ugo Montanari has contributed: Graph Transformation; Constraints and Logic Programming, Software Engineering, Concurrency, Computation Models, and Software Verification.