The SAO/NASA Astrophysics Data System (ADS) is a digital library portal for researchers in astronomy and physics, operated by the Smithsonian Astrophysical Observatory (SAO) under a NASA grant. The ADS maintains three bibliographic collections containing more than 15 million records covering publications in astronomy and astrophysics, physics, and general science, including all arXiv e-prints. Abstracts and full-text of major astronomy and physics publications are indexed and searchable through the new ADS modern search form as well as a classic search form.

arXiv® is a curated research-sharing platform open to anyone. As a pioneer in digital open access, arXiv.org now hosts more than two million scholarly articles in eight subject areas, curated by a strong community of volunteer moderators. arXiv offers researchers a broad range of services: article submission, compilation, production, retrieval, search and discovery, web distribution for human readers, and API access for machines, together with content curation and preservation. arXiv currently serves the fields of physics, mathematics, computer science, quantitative biology, quantitative finance, statistics, electrical engineering and systems science, and economics. arXiv was founded in 1991 and is maintained and operated by Cornell Tech.

Digital research library for particle physics and related areas. Includes bibliographic records, full-text of preprints, articles, books, journals, and more. CERN is the European Organization for Nuclear Research and is the largest particle physics research facility in the world.

INSPIRE is a community hub that helps researchers share and find accurate scholarly information in high energy physics (HEP). It serves as a one-stop information platform for HEP community, comprising 8 interlinked databases on literature, conferences, institutions, journals, researchers, experiments, jobs and data. Run in collaboration with various scientific research partners. It has been serving the scientific community for almost 50 years.

NASA STI provides access to aerospace-related citations, full-text online documents, images, and videos. The types of information included are: journal articles, patents, research reports, images, movies, and more.

Sponsoring Consortium for Open Access Publishing in Particle Physics is an open access repository of publications on particle physics.