Mathematical Sciences Publishers (MSP) is a nonprofit publishing, by and for mathematicians based in Berkeley, California publishing scientific and research literature of the highest quality at the lowest sustainable prices, covering mathematics and other selected fields. Papers are edited for grammar, consistency, and clarity of exposition, with the mathematics laid out at high typesetting standards. MSP is focused on developing software for publishing, and on assisting and creating top-level scientific-research publications. Publishing about 20,000 pages per year, 17 journals, a book series of open-access conference proceedings, and CelebratioMathematica, a celebration of mathematical lives and works. In addition, MSP offers publishing services for: Superior journal, Books, journals, celebratiomathematica, open access, author policies, Author testimonial, principles and ethics, proceedings and website production and hosting services, as well as the software service, EditFlow, for managing the editorial workflows of research journals.