Open Source Innovation Day 2023 of the Open Logistics Foundation in Berlin: When will open source solutions become established in logistics – in 5, 10 or 15 years? The vast majority of participants at the Open Source Innovation Day 2023 (#OSID2023) of the Open Logistics Foundation in the co-working space „Spielfeld“ in Berlin voted for „in 5 years“. Not a single person voted for „in 15 years“. The general mood at the first event of this kind was accordingly characterised by the will to promote open source in logistics. A total of about 80 representatives from industry and research took advantage of this opportunity to broaden their perspective and gain new insights on the topic of open source. (....)