The Association for Computing Machinery (ACM) is an international learned society for computing. It was founded in 1947 in the US, and has become the world's largest scientific and educational computing society. With its publishing house ACM promotes computer research and innovation through its journals, magazine, and the proceedings of more than 170 annual conferences and symposia.
More information about the publisher: https://www.acm.org/about-acm/about-the-acm-organization
Dutch National website providing information for academics about the advantages of open access to publicly financed research