OpenAIRE – Open Access Infrastructure for Research in Europe
Aggregator of European repositories
JSTOR and Artstor
Digital library that provides a vast collection of academic journals, books and primary sources, with access to content from various fields of knowledge.
Journals for Free
More than 15,900 journals available
Biblioteca Digital Brasileira de Teses e Dissertações
Integrates the thesis and dissertation information systems existing in Brazilian educational and research institutions.
La Referencia
Federated Network of Institutional Repositories of Scientific Publications in Latin America.
Dialnet
Portal for the dissemination of Spanish scientific output.
OAPEN – Publishing in European Networks
Provides access to academic books, mainly in the areas of Social Sciences and Humanities.
OA.mg
Search engine for academic articles in Open Access format, with the aim of indexing all scientific journals worldwide and offering more than 240 million articles for download and reading.
OATD – Open Access Theses and Dissertations
Aims to be the best possible resource for finding open access postgraduate theses and dissertations published worldwide.
Semantic Scholar
Scientific research tool and search engine that uses artificial intelligence (AI) and natural language processing to help researchers find and understand academic literature more efficiently.