OA REPOSITORIES

Access institutional and subject-based repositories that host research papers, theses, technical reports, and other academic publications.

These open repositories are valuable for conducting literature reviews, referencing prior research, and discovering global academic contributions across various domains. All content is free to access and aligned with open knowledge principles. 

Repositories are document servers operated at higher education or research institutions in which scientific and scholarly materials are archived and made accessible worldwide free of charge.

To know about DOAR, ROAR and a compiled list of Repositories, please click on the Tab - OA Repositories

some Subject Specific Repositories:

arXiv.org - arXiv is a free distribution service and an open-access archive for 1,737,208 scholarly articles in the fields of physics, mathematics, computer science, quantitative biology, quantitative finance, statistics, electrical engineering and systems science, and economics. Materials on this site are not peer-reviewed by arXiv.

ChemRxiv - ChemRxiv (pronounced 'chem-archive') is a free submission, distribution and archive service for unpublished preprints in chemistry and related areas.

PROJECT EUCLID - Mathematics and Statistics Online