For the most up-to-date listing of open-access journals, the Directory of Open Access Journals (DOAJ) site provides a directory of thousands of open-access journals.
For the most up-to-date listing of open-access books, the Directory of Open Access Books site provides a directory of thousands of open-access books.
The U.S. National Science Foundation's Public Access Initiative ensures the outputs of NSF-funded scientific research are made publicly available to the greatest extent, with the fewest constraints possible and consistent with law.
Visit NSF's public access initiative page for more information.
APS participates in SCOAP3 (Sponsoring Consortium for Open Access Publishing in Particle Physics), an international coalition of more than 3,000 libraries and research institutions from over 45 participating countries. Managed by the European Organization for Nuclear Research (CERN), it funds open access publishing in high-energy physics research.
Under the SCOAP3 model, high-energy physics papers posted to the arXiv and published in Physical Review Letters (PRL), Physical Review C (PRC), and Physical Review D (PRD) can be published open access, without any article publication charges (APCs) to authors.
For full details and how to submit, please visit the information page here: https://journals.aps.org/authors/scoap3