The proteomics platforms of the Core for Life facilities are different in terms of capacity, offered services, workflows and organization. The aim of this Work Group is to document this diversity and to identify shared interests and complementing services with the goal to promote information exchange. Current initiatives focus on proteomics quality control and benchmarking activities. In the longer run, the Work Group will try to attract yet missing core facilities and to provide a comprehensive overview of the proteomics portfolios of the participating core facilities for the wider research community. Yearly Work Group meetings, individual visits at the respective core facilities as well as bilateral contacts serve to organize activities and information exchange.