The Engage2020 Action Catalogue is an online decision support tool that is intended to enable researchers, policy-makers and others wanting to engage society in research and innovation, to find the method that is best suited for their specific project needs. The Action Catalogue includes 57 methods, and is publicly available so that anyone can search the methods, read thorough descriptions of what the methods do, strengths and weaknesses of each, what societal challenges they can be used to address, and examples of what they have been used for previously and much more. The action catalogue is available here.