Open Access Resources: Journals

Over 2,800 free e-journals covering all subjects.

CORE (COnnecting REpositories) offers seamless access to millions of open access research papers by aggregating all open access research outputs from repositories and journals worldwide.

OpenDOAR is a directory of academic open access repositories relevant to research.

Google Scholar provides a fast and simple way to search for scholarly literature, including journal articles, books and theses.

You will need to set up the Library Link (Menu > Settings > Library links) in order to do that.

Nearly 90% of all scientific articles published in English can be found through Google Scholar. It covers every discipline; though some disciplines such as humanities are underrepresented . Google Scholar links to major publishers and repositories. Nevertheless, some webpages are not indexed.
Its ranking system focuses more on quantity- i.e. on a citation count and the number of papers an author published. Its citation count is also susceptible to manipulation. Spammers can increase the number of citation a paper can get. There are journals that Google Scholar search engine cannot access. There are instances when it indexes predatory journals. This emanates from its approach to index as many journals as possible. This undermines its quality. Filtering options in Google Scholar are limited, so it is not easy to search within a discipline or a journal article

PubMed Central is the US National Institutes of Health (NIH) free digital archive of over 200 freely available biomedical and life sciences journals.