Publication List and Researcher Profile
ORCid is the free persistent digital identifier designed to help researchers distinguish themselves. With an ORCid ID you can clarify what activities are yours regardless of how your name is spelled.
Who can use itFaculty, Students
Self service links and Resources
Guided service links and Resources
Disambiguates researcher names; Controlled by researchers/individuals; Publisher agnostic; Increasingly used by journals, conference organizers and granting agencies to be able to quickly and accurately view publication record of a researcher
Academia.edu; ResearchGate (both similar but do not provide unique ID or disambiguation)