PREreview's mission is to bring more diversity and equity to scholarly peer review by supporting and empowering communities of researchers, particularly those at early stages of their career (ECRs) and historically underrepresented in scholarship, to review preprints in a process that is rewarding to them. PREreview gives systematically disadvantaged scientists better ways to find a voice, train, and engage in peer review. Our work is a direct response to the flawed way scientific research is evaluated. Behind closed doors, a handful of unpaid reviewers—selected opaquely and mainly through personal connections—use subjective criteria to decide the fate of a research article. This arcane process is slow and disadvantages researchers from historically underrepresented groups. PREreview is a fiscally sponsored project of the non-profit organization Code for Science and Society and is funded by the Alfred P. Sloan Foundation and the Wellcome Trust. To learn more visit our blog at blog.prereview.org. Email: contact@prereview.org Twitter: @PREreview_