Open access to over 900,000 e-prints in Physics, Mathematics, Computer Science, Quantitative Biology, Quantitative Finance and Statistics
SocArXiv, open archive of the social sciences, provides a free, non-profit, open access platform for social scientists to upload working papers, preprints, and published papers, with the option to link data and code.
bioRxiv is a free online archive and distribution service for unpublished preprints in the life sciences. It is operated by Cold Spring Harbor Laboratory, a not-for-profit research and educational institution.
The OSF is a free, open source service of the Center for Open Science, and provides a platform for many disciplinary preprint services including AgriXiv, PsyArXiv and SportRxiv.