Open Access Journals

This service covers free, full text, quality controlled scientific and scholarly journals. There are now 5190 journals in the directory. Currently 2150 journals are searchable at article level. As of today 417315 articles are included in the DOAJ service.
Open Access Publishing in European Networks (OAPEN) OAPEN is an initiative in Open Access publishing for humanities and social sciences monographs. It provides a searchable index to peer-reviewed monographs and edited volumes published under an Open Access business model, with links to the full texts of the publications at the publishers website or repository.
Open J-Gate e-Journal portal which provides free article level access.
Free e-Journals Access >700 free e-journals covering Subjects like Business & Management, 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.
Public Library of Science (PLoS) PLoS is a nonprofit organization of scientists and physicians committed to making the world’s scientific and medical literature a freely available public resource.
NISCAIR Online Periodical Repository You can access full text articles from research journals published by NISCAIR.
Internet Archive It is a non-profit digital library which offers free online access to millions of documents, Internet sites and other cultural artifacts in digital form.
PhysNet It is the worldwide Network of Physics Departments and Documents provides a set of information services for physicists. Lists Physics related Journals, which are available with free fulltext on the web. A list of ‘EPS Recognized Journals’ is given as well.
ABC Chemistry Directory of free fulltext journals in chemistry
Scientific Electronic Library Online (SciELO) It is a model for cooperative electronic publishing of scientific journals on the Internet. Provides free access to scientific journal articles from Brazil, Chile, Cuba, and Spain.
Digital Library and Archives
DLA provides access to scholarly electronic serials that are peer-reviewed, full text, and accessible without charge. Their topics range from education, engineering, and literature to technology, philosphy and libraries.
Indian Academy of Science 
Indian Academy of Science
Indian Medlars Centre MedInd Journals