The proceedings, including papers (full and short), case studies, and workshop summaries are part of the International Conference Proceedings Series (ICPS) published by ACM.
You can find the proceedings here: https://dl.acm.org/doi/proceedings/10.1145/3593743
Demos and posters will be published as C&T 2023: Supplementary Proceedings of the 10th International Conference on Communities and Technologies by EUSSET Digital Library publication series.
EUSSET Proceedings: https://dl.eusset.eu/handle/20.500.12015/4697