The aim of this paper is to present the Centre Mersenne for Open Scientific Publishing, a new open access scientific publishing infrastructure for publications written in LaTeX. The Centre Mersenne was launched in January 2018 with the first volume of the newly-created journal Algebraic Combinatorics. This non-profit initiative hosted by French public institutions was created to address a growing need within the scientific community for alternative solutions simultaneously scalable, sustainable, trustworthy, of high quality and at fair price. The Centre Mersenne supports publications such as journals, books and proceedings from any scientific discipline, provided they are written in LaTeX and engaged towards Diamond open access.