EBSCO Host publishing  (Review)

 EBSCO Information Services provides a complete and optimized research solution comprised of research databases, e-books and e-journals—all combined with the most powerful discovery service and management resources to support the information and collection development needs of libraries and other institutions and to maximize the search experience for researchers and other end users.

 Gale Cengage Learning 

Gale is passionate about providing the content, tools, and services libraries need to enable learning and promote information discovery. What’s your passion? Whether it’s enabling faculty scholarship, improving outcomes in the classroom, or becoming an even more integral part of your community, Gale is here to help you achieve your goals and make users passionate about libraries.

The aim of the DOAJ is to increase the visibility and ease of use of open access scientific and scholarly journals, thereby promoting their  increased usage and impact. The DOAJ aims to be comprehensive and cover all open access scientific and scholarly journals that use a quality control system to guarantee the content. In short, the DOAJ aims to be the one-stop shop for users of open access journals.

PKP is a multi-university initiative developing (free) open source software and conducting research to improve the quality and reach of scholarly publishing.

Latindex 

 It is the result of the cooperation of a network of institutions that it works in a coordinated manner to collect anddisseminate bibliographic information on serial scientific publications produced in the region.

Google Scholar provides a simple way to broadly search for scholarly literature. From one place, you can search across many disciplines and sources: articles, theses, books, abstracts and court opinions, from academic publishers, professional societies, online repositories, universities and other web sites. Google Scholar helps you find relevant work across the world of scholarly research

OpenAire

50 partners, from all EU countries, and beyond, will collaborate to work on this large-scale initiative that aims to promote open scholarship and substantially improve the discoverability and reusability of research publications and data. 

LivRe! 

É o portal desenvolvido pela CNEN - Comissão Nacional de Energia Nuclear, através do CIN - Centro de Informações Nucleares, para facilitar a identificação e o acesso a periódicos eletrônicos de acesso livre na Internet. 

EuroPub

EuroPub is a comprehensive, multipurpose database covering scholarly literature, with indexed records from active, authoritative journals, and indexes articles from journals all over the world. The result is an exhaustive database that assists research in every field. Easy access to a vast database at one place, reduces searching and data reviewing time considerably and helps authors in preparing new articles to a great extent.

EuroPub aims at increasing the visibility of open access scholarly journals, thereby promoting their increased usage and impact.