access 160+ million publications and connect with 25+ million researchers. join for free and gain visibility by uploading your research.

internet archive is a non-profit digital library offering free universal access to books, movies & music, as well as 624 billion archived web pages.

library genesis is a scientific community targeting collection of books on natural science disciplines and engineering.

mdpi is a publisher of peer-reviewed, open access journals since its establishment in 1996.

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science/aaas peer-reviewed journals deliver impactful research, daily news, expert commentary, and career resources.

semantic scholar uses groundbreaking ai and engineering to understand the semantics of scientific literature to help scholars discover relevant research.

proceedings of the national academy of sciences (pnas), a peer reviewed journal of the national academy of sciences (nas) - an authoritative source of high-impact, original research that broadly spans the biological, physical, and social sciences.

the homepage for the us department of energy: energy.gov