Open Access

Books and repositories Internet Literature Editor that provides free access to full text works in the areas of Culture, Economy, History, Literature, Psychology.
Cochrane Library Medical Sciences Area: scientific journals and answers on clinical cases.
DOAB  Provides a searchable index of peer reviewed books and volumes published under an Open Access model, with links to full text publications on the publisher's website or repository.


Open archive of theses and academic articles.
InTech  The world's largest multidisciplinary open access publisher of books covering the fields of Science, Technology and Medicine. Since 2004 has collaborated with over than 87000 authors and published more than 2400 books and 6 journals with the aim of providing free online access. 
OpenDOAR Directory of Open Access Repositories  Directory of academic open access repositories.
​​​​​​​ Registry of Open Access Repositories  This registry of institutional files promotes acces to repositories wordwide.

Searches over 60 databases and over 2200 selected websites from 15 federal agencies, offering 200 million pages of authoritative U.S. government science information including research and development results.


Open Access resource in the field of Physics that allows access to a vast number of scientific articles.
TEL Thèses-en-ligne


Journals Search Open access to the fields of Physics, Mathematics, Computer Science, Biology Finance and Statistics.
Bioline International Open access in the areas of Health, Environment and Biodiversity; research journals from developing countries.
Biomed Central Open Access Publisher in the fields of Health, Biology, Psychology, Zoology and Biotechnology.
Directory of Open Access Journals It is an online directory that indexes and provides access to quality open access, peer-reviewed international journals.  International Archive of e-prints in libraries and information science.
ERIH PLUS Access to European Journals of Social and Human Sciences from the European Science Foundation.
Intute Free online service in the areas of Engineering, Mathematics and Computer Science.
​​​​​​​ JSTOR Digital library of academic journals, books and primary sources. Access by individual registry.
Latindex  Search of scientific journals from Latin America, the Caribbean, Spain and Portugal.
Looksmart Search of millions of articles appearing in academic, technological and general publications.
Open Science Directory Open access to journals and other documents.
Public Library of Sciences Peer-reviewed open access journals in the fields of Biology, Medicine, Computational Biology, Genetics, etc.
RAM Databases Recent advances in Manufacturing. Indexing database discontinued in 2006.
RePEc  Academic Collection, in open access, in the area of Economics and related subjects. 

Access to journals and books in the area of Social Sciences. 

SciELO Scientific Electronic Library Online Provides full text access to articles from more than 150 scientific journals from Latin America, the Caribbean, Spain, Portugal and South Africa.
Scientific Electronic Library Online Small collection of Portuguese journals, active and non-active, searchable through the b-on.
SSRN Bibliography in Economics and Social Sciences; also offers access to "grey literature” or not yet published literature.

Search of articles, books, theses and dissertations, patents and norms in the fields of Engineering, Mathematics and Computer Science, employment ads.


Scientific Data

European  Open Data Portal

The EU Open Data Portal provides, via a metadata catalogue, a single point of access to data of the EU institutions, agencies and bodies for anyone to reuse.

DMPTool Free tool to create, review, and share scientific data management plans.
Registry of Research Data Repositories Directory of scientific, thematic and multidisciplinary data repositories with information on the thematic scope, institutional affiliation, geographical scope and general characteristics of each of the approximately 1,500 registered world repositories.
Repositório de Dados Científicos do RCAAP Scientific data repository from RCAAP - Scientific Open Access Repositories of Portugal.
​​​​​​​ Research Shared Multidisciplinary repository of scientifc data on projects funded by the European Union but receiving also data from other sponsors.
Share Partilhar