The QUAREP-LiMi is a group of enthusiastic light microscopists from Academia and Industry all interested in improving quality assessment (QA) and quality control (QC) in light microscopy. We came together in a first on-line Webmeeting on 28th of April, 2020 with about 50 attendees. By now (01/25/2021) the group has grown to 199 people from 21 countries all over the world. We have members from national microscopy communities, companies involved in the microscopy business and organizations or institutions related to standardization on a national or international level (see the graph below and on the member page for an overview).