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Search the Post-Reformation Digital Library's collection of 110,668 titles by more than 6,400 authors.

engrXiv hosts searchable engineering preprints, with recent papers listed on its homepage.

CeSGO connects scientific collaborators in western France through its research collaboration network.

SciELO brings together an online scientific library, journal collections, and related repositories, preprints, and books across participating countries.

Scopus offers an abstract and citation database for peer-reviewed literature, with research indicators and records spanning scientific fields.

Google Patents lets users search and read full-text patents from around the world and find prior art in non-patent literature.

SURFACE is Syracuse University’s institutional repository for scholarly research and other university work.

ARPHA Preprints shares submitted research manuscripts before peer review for journals hosted on the ARPHA platform.

TeachEngineering offers free, standards-aligned K–12 lessons and hands-on activities in science, engineering and math.

Find information about staff, history, and research at the Mathematical Institute of the Slovak Academy of Sciences.

This portal searches catalogs and collections from Slovak libraries, including books, serials and other materials.

Dokuz Eylul University’s DSpace repository provides an online catalog for the institution’s research materials.

Browse publications from the Swiss Federal University for Vocational Education and Training in its SFUVET collection.

ERIH PLUS indexes scholarly journals in the humanities and social sciences for research and discovery.

Math-Net.Ru indexes mathematical journals and research, with listings for authors, organizations, conferences, and seminars.

ScholarWorks@UA provides access to research and scholarship from the University of Arizona community.

Open access campus repository for scholarly and creative works produced by faculty, staff, and students.

NeuroMat shares research and news from Brazil's Center for Neuromathematics, including work on statistical models of the brain.

PolyU’s Outstanding Work by Students portal presents selected student projects and achievements.

Browse preprints and supporting information in chemistry and nanotechnology through the Beilstein Archives.

Search Marshall Digital Scholar for research and scholarship produced at Marshall University.

Search NASA's Technical Reports Server for reports and publications from the agency's technical collections.

Latindex provides information on scholarly, technical and cultural journals published across Latin America, the Caribbean, Spain and Portugal.

BioOne provides more than 580 journals and ebooks in biological, ecological and environmental sciences.