ResearchGate is the professional network for scientists and researchers.

Search Engine for Scientific Publications

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

OA repository for EU-funded data and publications.

A free online service for academic social network analysis and mining.

Commercial social networking website for academics.

Social Science Research Network

Open source software that facilitates open collaboration in science research.

Free service that helps increase reach & impact of research.

ImpactStory is an open source, web-based tool that provides altmetrics.