A unique search tool, helping you to find free academic articles and books

Free research management, collaboration, and productivity platform

Baidu Scholar aims to become the biggest, most comprehensive research platform in China.

BASE provides more than 150 million documents, from more than 7,000 sources.

Collection of scholarly journals on your computer, tablet, or smartphone

Automatic extraction of structured metadata from scientific literature.

ChemRxiv is a repository for the free submission and distribution of preprints in chemistry and related areas.

Aggregator of open access research papers for researchers and repositories.

Search metadata records for journal articles, field-specific, for software.

Online rental service for scientific, technical and medical research.