Founded in 1980, Mary Ann Liebert, Inc. is a leading company in the Scientific, Technical, and Medical knowledge and information industry. The publisher is known for authoritative international publications in cutting-edge basic and translational biomedical research, with expanding scope in engineering, business, environment, and legal publications. The MPG subscription also covers article-processing charges for Max Planck authors in MAL journals. Further details are available on the MPDL website

Including Oxford Scholarship Online (OSO), the University Press Scholarship Online (UPSO) publishes new books every month from an ever-growing roster of contributing presses, each adding to the variety of subjects covered on the platform. The MPG purchased the volumes 2003-2013/2014 of 16 OSO subject collections. This selection is continuously extended by single e-book acquisitions by MPG libraries.