Preprint servers are online platforms where researchers can share their findings before formal peer review. This allows scientists to disseminate their work quickly, receive feedback, and engage with the community. Preprints are often used in fields like biology, physics, and social sciences to accelerate the sharing of knowledge. These platforms help increase the visibility of research and can lead to faster advancements in various disciplines. However, since preprints have not undergone peer review, they should be interpreted with caution. Popular preprint servers include arXiv, bioRxiv, and SSRN.