JCR presents quantifiable statistical data that provides a systematic way to evaluate the journals and their impact and influence. JCR Web has the latest five-year data on a journal. For information dating back further, one must consult the print/microfiche version. Read more about Journal Citation Reports.
Provides the Article Influence and Eigenfactor to scholarly journals, popular magazines, PhD theses, and newsprint in the natural and social sciences. The Article Influence is a measure of a journal's prestige based on per article citations and comparable to Impact Factor. The Eigenfactor is a measure of the overall value provided by all of the articles published in a given journal in a year. The Journal Citation Reports now shows the Eigenfactor.
SCImago Journal Rankings Sortable list of SJR rankings (incorporated in Scopus) by subject area and category. Rankings are broken down by quartiles (Q1 = top 25% of journals in that category). Also incorporates journal H-index rankings. Coverage goes back to 1999.
Google Scholar Metrics Rankings are based on a journal h5-index (h number of articles published in the previous 5 years with h or more citations each) and h5-median (the median citation number for all articles in the journal's h5-index). Sortable by language (including many non-English publications) and broadly by subject discipline. Journals can be searched by keyword.