What is a repository?

A repository is a repository of electronic data (often free of charge). The most authoritative electronic archives by research area:

Arxiv.org – preprints in physics, maths, biology, etc.

BioRxiv – preprints in biological sciences.

ChemRxiv – preprints in chemical sciences.

MedRxiv – preprints in medical and health sciences.

SSRN – preprints in social sciences and humanities.