ResearchGate - Find and share research

"ResearchGate is the professional network for scientists and researchers. Over 15 million members from all over the world use it to share, discover, and discuss research. We're guided by our mission to connect the world of science and make research open to all."

It is similar to Google Scholar (lots of academic articles) but also has a social networking component.

https://www.researchgate.net/

Contributed by Derek