"In academic publishing, a preprint is a version of a scholarly or scientific paper that precedes formal peer review and publication in a peer-reviewed scholarly or scientific journal." (https://en.wikipedia.org/wiki/Preprint)
- bioRxiv ("the preprint server for Biology)
- arXiv q-bio (Quantitative Biology)
- PeerJ Preprints (Sections include: aquatic biology; biochemistry, biophysics, and molecular biology; biodiversity and conservation; bioinformatics and genomics; brain and cognition; ecology; environmental science; microbiology; paleontology and evolutionary science; plant biology; and zoological science)
- Preprints.org ("the multidisciplinary preprint platform")
- Wellcome Open Research (click the Gateways & Collections link at the top of the page)
- The Winnower (click the Topics link in the top left corner to see coverage)