Database of mathematical research literature. It includes reviews, abstracts, and bibliographic information for articles, books, and other publications in pure and applied mathematics, statistics, and theoretical computer science.
Covers applied science specialties, from technology and engineering, acoustics and aeronautics, to nuclear and civil engineering, neural networks, computers and informatics, and more.
Database covering scientific subjects including astronomy, biology, botany, chemistry, conservation, health & medicine, oceanography, physics, zoology, and more.
Open-access archive for 2,000,000+ scholarly articles in the fields of physics, mathematics, computer science, quantitative biology, quantitative finance, statistics, electrical engineering and systems science, and economics. Materials on the site are not peer-reviewed by arXiv.
Open access to bibliographic data of abstracts of peer-reviewed articles, books, and conference proceedings in pure mathematics, as well as applications in natural sciences, computer science, economics and engineering. Also covers history and philosophy of mathematics and university education.
Covers all areas of mathematics, including algebra, calculus, discrete mathematics, geometry, history, number theory, probability, statistics, and topology. From Wolfram.