ResearchGate is the professional network for scientists and researchers.

Search Engine for Scientific Publications

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

Commercial social networking website for academics.

Social Science Research Network

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.

An online marketplace for science experiments.

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

Tools and documentation for citizen science