You can find links to several free e-journal
directories in the Scholarly Electronic
Publishing Resources section of the
Scholarly Electronic Publishing Bibliography
(see below):

http://info.lib.uh.edu/sepb/reser.htm#directories

Especially, see the Electronic Journal Miner, Free
Medical Journals.Com, Free Online Full-text Articles,
and Scholarly Journals Distributed Via the World-Wide
Web.

Best Regards,
Charles

Charles W. Bailey, Jr., Assistant Dean for Digital Library
Planning and Development, University of Houston,
Library Administration, 114 University Libraries,
Houston, TX 77204-2000.  E-mail: cbailey@uh.edu.
Voice: (713) 743-9804.  Fax: (713) 743-9811.
http://info.lib.uh.edu/cwb/bailey.htm