The proceedings of the June 2006 conference consists of 30 technical papers and eight tool demonstrations on the evolution of software systems, static and dynamic analysis, quality assessment, traceability and languages, and cognitive approaches. Topics include automated extraction of database interactions in web applications, reverse engineering scripting language extensions, using music to increase runtime program comprehension and debugging effectiveness, and classifying change types for qualifying change couplings. The tool demonstrations present an Eclipse plug-in for source code exploration, a framework for performance-informed software development, and evolution storyboards. No subject index is provided. Annotation ©2006 Book News, Inc., Portland, OR (booknews.com)