Public search engine and digital library for scientific and academic papers.

Aggregator of open access research papers for researchers and repositories.

Papers helps you collect and curate your research material.

A free, all-in-one online software platform for DNA design.

Aims to enable everyone to perform research.

Online collaborative writing, citing, hosting of data and publishing.

Article recommendation and literature discovery service in biology and medicine.

ScienceOpen explores new ways to open up information for the scholarly community.

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

Google's mission is to organize the world's information and make it universally accessible and useful.