Eigenfactor SiteEigenfactor is a free database that assesses journals by ranking them the way Google ranks Web pages. While Google uses the network of hyperlinks to identify relevancy and importance in Web pages, this site uses citations in the academic literature as tallied by JCR (Journal Citation Reports) in order to identify the most "influential" journals. The Eigenfactor score claims to offer a rough estimate of how often a journal will be used by scholars.
The Eigenfactor score eliminates self-citations. In addition, references from one article in a journal to another in the same journal is not counted.