ISI's Journal Citation Reports provides a wide variety of information on the journals it indexes, which is over 7000 covering many disciplines; included among those titles that are Open Access journals. Information for the JCR is drawn from two sources: Science Citation Index Expanded and Social Sciences Citation Index. Among the types of data included for a source are the following:
For more detailed definitions and to see the other kinds of data supplied by JCR, see the Journal Citation Reports Quick Reference Card.
There is a debate surrounding the usefulness of impact factors. For more on this debate and on impact factors, in general, see Michigan State University's guide to Journal Impact Factors.
The JCR search screen allows researchers to to view journals by rank or to view categories by rank.
Journals By Rank
Journal Summary Information
Journal Detail Screen