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

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

Access to major journals in the biomedical and related social sciences fields.

An easy and intuitive way to discover, read, annotate, write and share scientific research.

Mendeley is a desktop and web program produced by Elsevier for managing and sharing research papers, discovering research data and collaborating online.

Collaboratively in the high-energy physics community to convert journals to OA.

A research journal, composed entirely of "brief ideas".

Scientific platform to research and curate the entire corpus of phenomenology.

Online rental service for scientific, technical and medical research.

Share ideas with colleagues and peers, collaborate together, share results, and get feedback from all over the world.