An e-print archive, founded by Paul Ginsparg in 1991 and maintained and operated by Cornell University. It is a free distribution service and an open-access archive for close to 2,367,795 pre-peer-reviewed scholarly articles in the fields of physics, mathematics, computer science, quantitative biology, quantitative finance, statistics, electrical engineering, systems science, and economics.

The bioRxiv, operated by Cold Spring Harbor Laboratory, is a fairly new but growing open archive for more than 214,755 unpublished preprints in the life sciences. The bioRxiv provides free and unrestricted access to all articles posted on the server.

Manuscript under review in Cell Press journals

CERN Document Server is collections of various openly available documents of nearly 579,127, among which over 139,086 are preprints related to particle physics and related areas. In addition to preprints, this server also provides access to articles, books, and proceedings.

A new but fast-growing archive for unpublished preprints which provide free submission and distribution of articles in Chemistry and related areas. This platform with a collection over 20,887 helps the researcher to collect feedback and recommendations on their preprints.

ChinaXiv, maintained and operated by National Science Library, Chinese Academy of Science is a preprints archive and open repository for scientific unpublished articles in the field of natural science. There are also several sub-domains of this platform like PsyChinaXiv Preprints, ChinaXiv Biology Preprints, and many more.

A free preprint service for electrochemistry and solid state science and technology.

The Earth and Space Science Open Archive (ESSOAr) is a community server with 13,468 public documents, developed by American Geophysical Union (AGU) and Atypon established to accelerate the open discovery and dissemination of earth, environmental, and space science research by archiving and sharing early research outputs, including preprints, presentations from major scientific meetings, and important documents of scholarly societies.

IndianRxiv - A Preprints Repository Service for India (eISSN 2583-0007) is a community-led project dedicated to archiving preprints (first drafts of scholarly works) written by Indian researchers to enhance collaborations, promote the visibility of their research, and encourage open science. Open Access India manages the server, which is hosted by the Society for Promotion of Horticulture, Bengaluru.

An electronic archive for research papers in Mathematical Physics and related areas.

A preprint service for the nutritional sciences.