ECOOP is Europe’s longest-standing annual Programming Languages (PL) conference, bringing together researchers, practitioners, and students to share their ideas and experiences in all topics related to programming languages, software development, object-oriented technologies, systems and applications. ECOOP welcomes high quality research papers relating to these fields in a broad sense. ECOOP is committed to affordable open-access publishing. Recent year’s publications have been published by Dagstuhl’s LIPIcs series under a Creative Commons CC BY license where the authors retain their copyright. ECOOP articles have been published without open-access publishing fee and can be accessed via a DOI. LIPIcs is indexed in DBLP, Google Scholar, Scopus and others.