Repositories

Academia is the easiest way to share papers with millions of people across the world for free.

PDF Drive is your search engine for PDF files.

Web search engine that indexes the full text or metadata of scholarly literature.

Research in academic, corporate, government, public and school libraries around the world.

Find open access journals & articles in various fields

A platform for research students to deposit their Ph.D. theses and make it available to the entire scholarly community in open access.

Discover scientific knowledge and stay connected to the world of science.

Explore millions of high-quality primary sources and images from around the world, including artworks, maps, photographs, and more.