AgEcon Search
Provider: University of Minnesota Department of Applied Economics, University of Minnesota Libraries, Agricultural and Applied Economics Association
Description: AgEcon Search is a free-to-user Web site that contains the full text of working papers, conference papers and journal articles in applied economics, including the subtopics of agricultural, consumer, energy, environmental, and resource economics. Contributors include academic institutions, government agencies, professional associations, and non-government organizations
DART – Europe E-theses Portal

Provider: Liber & UCL
Description: DART-Europe is a partnership of research libraries and library consortia who are working together to improve global access to European research theses.
DOAB – Directory of Open Access Books

Provider: OAPEN Foundation
Description: The primary aim of DOAB is to increase discoverability of Open Access books.The directory is open to all publishers who publish academic, peer reviewed books in Open Access and should contain as many books as possible, provided that these publications are in Open Access and meet academic standards.
DOAJ – Directory of Open Access Journals

Provider: Lund University Libraries

Description: The DOAJ (Directory of Open Access Journals) was launched in 2003 at Lund University, Sweden. Today, the independent database contains ca. 12000 open access journals covering all areas of science, technology, medicine, social science and humanities.

Provider: ZBW
Description: EconStor is a publication server for scholarly economic literature. The full texts collected here constitue mostly of working papers, but also journal articles, conference proceedings, etc. EconStor is among the largest repositories in its discipline with 177,703. full-texts, and it regularly reaches top positions in international rankings.
OpenDOAR – The Directory of Open Access Repositories

University of Nottingham
Description: OpenDOAR is the quality-assured global directory of academic open access repositories. It enables the identification, browsing and search for repositories, based on a range of features, such as location, software or type of material held.
SSOAR – Social Science Open Access Repository

Leibniz-Institut für Sozialwissenschaften
Description: In this repository you will find steadily growing holdings of freely available, full-text social science documents. Fields: Social Sciences, Interdisciplinary and Applied Fields of the Social Sciences, Humanities, Legal Science and Administrative Science, and Science, Technology and Medicine
REAL – Repositories of the MTA

Library and Information Centre of the Hungarian Academy of Sciences
Description: Operated by the Library and Information Centre of the Hungarian Academy of Sciences, REAL is an electronic library service containing full-text documents, such as journal articles and conference publications, out-of-copyright books, periodicals published by the Hungarian Academy of Sciences, manuscripts, PhD dissertations.