Directories and Subject gateways
A directory is a book or website listing individuals or organizations alphabetically or thematically with details such as names, addresses, and telephone numbers.
Subject gateways are those value-added services which select, evaluate, catalogue and classify Internet resources with the aim to help users in the information retrieval, being a very useful resource for the respective user communities.
Digital Commons Network
http://network.bepress.com/
The Digital Commons network brings together free, full-text scholarly articles from hundreds of universities and colleges wordwide.The network includes a growing collection of peer-reviewed journal articles, book chapters, dissertations, work papers, conference proceedings and other original scholarly work.
http://www.icast.org.in/ejournal/ejournal.php
700 Free E-journals covering Subjects like Business & Managment, Chemistry, Earth Sciences, Engineering, Environmental Sciences, General Works, Health Sciences, Information Technology, Library Science, Life Sciences, Material Science, Mathematics, Media and Communication, Physics & Social Sciences.
Directory of Open Access Journals (DOAJ)
http://doaj.org/
DOAJ is an online directory that indexes and provides access to quality open access, peer-reviewed journals.
Cambridge journals
http://journals.cambridge.org/action/openAccessContent?sessionId=
0A1D632AE37ED813CEFFB02501DFA88D.journals
This site contain both open access journals, hybrid journals and all open access articles published by cambridge. One can browse journals according to subject wise in alphabetical order
Bentham Open Access
http://www.benthamopen.com/index.php
BENTHAM OPEN publish over 230 plus peer-reviewed open access journals. These free-to-view online journals cover all major disciplines of science, technology, medicine and social sciences.
Computer science journals
http://www.cscjournals.org/
It is an International publisher focusing on open access publications of its high quality peer reviewed journals ranging from all science related topics.
ABC-Chemistry: FREE CHEMICAL INFORMATION: Researcher's guide to journals
http://abc-chemistry.org/
It is a directory of Free Full – Text Journals in Chemistry
BioMed Central publishes 264 peer-reviewed open access journals.
http://www.biomedcentral.com/
IOSR Journals (International Organization of Scientific Research)
http://iosrjournals.org/
IOSR Journals a broad-based open access, this site covers different research journals in science and technology
Infofacility
http://www.infofacility.com/
Infofacility publishes peer reviewed open access online journals in various fields.
Science & Education
http://www.sciepub.com/portal/journals
It provides access to different subject journals