DOAJ (Directory of Open Access Journals)

Directory of Open Access Journals

J-STAGE 

A repository of academic journal articles and research papers created and maintained by the Japan Science and Technology Agency (JSTA) with the majority available as open access content.

Uniform Information Gateway (UIG) 

UIG provides simultaneous searching in different Czech and foreign resources (library catalogues, union catalogues, full text databases etc.) through one user interface.  Resources available in UIG are free accessible or licensed (the access is possible only from defined IP addresses).

TECH – Subject Information Gateway on Technology, Natural and Applied sciences

TECH provides searching in different Czech and foreign resources.

arXiv

Electronic archive and distribution server for research articles. Covered areas include physics, mathematics, computer science, nonlinear sciences, quantitative biology, quantitative finance, and statistics. 

National Center for Biotechnology Information (NCBI)

NCBI provides access to biomedical and genomic information.