SlideWiki is an online slideshow tool that offers users the chance to create and collaborate on slides, assessments and to share content as structured open educational resources using a Creative Commons licence. With SlideWiki you can engage with your audience by collaborating with colleagues to co-design and co-create course materials and share your knowledge across the world. SlideWiki is an open-source platform, and all its content can be reused under Creative Commons CC-BY-SA license. SlideWiki development, large-scale trials and underlying research is funded from Framework Programme for Research and Innovation Horizon 2020 under grant agreement no 688095. The project involves 17 partners to develop, test and trial SlideWiki. visit the project website.