Where you can find preprints:

There are various preprint repositories (see below) and also website platforms where you can search all/most of the preprint repositories, including PrepubmedPublonsThe Winnower, and Academic Karma (please let us know at contact@prereview.org or leave a comment on this page if we missed any). You can search the Research Preprint Servers List to find a preprint server in your field.
Below is a list of the most common preprint repositories that post findings in the biological sciences: