| CNRS - GERiiCO Laboratory | France |
| Data Archiving and Networked Services, DANS-KNAW | Netherlands |
| EBSCO Publishing | United States |
| Gambling Research Exchange Ontario, GREO | Canada |
| German National Library of Science and Technology, TIB | Germany |
| GreyNet International, Grey Literature Network Service | Netherlands |
| Institute of Information Science and Technologies, ISTI-CNR | Italy |
| Korea Institute of Science & Technology Information, KISTI | Korea |
| Leibniz Information Centre for Science and Technology | Germany |
| National Library of Technology, NTK | Czech Republic |
| National Research Council of Italy, CNR Central Library | Italy |
| Nuclear Information Section; International Atomic Energy Agency, NIS-IAEA | United Nations |
| Slovak Centre of Scientific and Technical Information, CVTISR | Slovakia |
| University of Florida; George A. Smathers Libraries | United States |
| University of Lille | France |
| University of Wisconsin, Milwaukee | United States |
| WorldWideScience Alliance | United States |
| Frontinus | UK |
| University of California, Irvine | United States |
| Biblioteca Luca Pacioli - MEF | Italy |
| ISPRA | Italy |
| Trieste University Language Centre | Italy |
| University of Mysore | Italy |
| Federal Judicial Center | United States |
| National Research Council | Italy |
| University of Alberta | Canada |
| PEI Health Wellness | Canada |
| Soprintendenza Archivistica e Bibliografica della Toscana | Italy |
| Università degli studi di Firenze | Italy |
| NIC Information Center | United States |
| University of Minnesota | United States |
| National Library of Medicine | United States |
| Newcastle University | UK |
| Universidad de la Republica, Uruguay | Uruguay |
| U.S. Department of Justice Libraries | United States |
| Alberta Health Services | Canada |
| Emecann | Uruguay |
| Food and Agriculture Organization of the United Nations - FAO | Italy |
| Canadian Agency for Drugs and Technologies in Health - CADTH | Canada |
| Greek Ministry of Education | Greece |
| University of Macedonia/Library | Greece |
| Istituto Nazionale di Astrofisica - INAF | Italy |
| University of Minnesota | United States |
| UFPE / IFAL | Brasil |
| University of South Eastern Norway | Norway |
| Copyright Clearance Center | United States |
| Central medical Library, Medical faculty, University of Ljubljana | Slovenia |
| Meru University of Science and Technology | Kenya |
| Georgetown University Medical Center | United States |
| Federal University of Paraíba | Brasil |
| Biblioteca Albo nazionale Segretari comunali e provinciali | Italy |
| Olympic Study and Information Centre | Czech Republic |
| International Atomic Energy Agency | -- |
| Carleton University | Canada |
| Shandong First Medical University | China |
| FAO | -- |
| Yale Cushing/Whitney Medical Library | United States |
| University of Mysore | India |
| Laupus Health Sciences Library East Carolina University | United States |
| University of Maryland | United States |
| U.S. Department of Veterans Affairs | United States |
| The University of the West Indies | Jamaica |
| National Library and Archives of Iran | Iran |
| Central medical library, Medical faculty, University of Ljubljana | Slovenia |
| Associazione Italiana Biblioteche (AIB) | Italy |
| ENEA | Italy |
| Scuola Normale Superiore | Italy |
| Università Cattolica Del Sacro Cuore | Italy |
| ARPAT | Italy |
| Western Michigan University | United States |
| University of Pisa | Italy |
| School of Information Studies, University of Wisconsin Milwaukee | United States |
| University of Padova | Italy |
| University Of Modena & Reggio Emilia | Italy |
| INAPP | Italy |
| Università degli Studi di Roma, La Sapienza | Italy |
| USPTO | United States |
| University of Bologna | Italy |
| Università Politecnica delle Marche - Biblioteca Medica | Italy |
| UNOV Library | -- |
| Gambling Research Exchange | Canada |
| CTBTO | -- |
| Alberta Health Services | United States |
| Siena University | Italy |
| EBSCO | United States |
| Maritime Raja Ali Haji University | Indonesia |
| LAC-Group | United States |
| Aligarh Muslim University | India |
| INAPP | Italy |
| DEOMI | United States |
| Guru Angad Dev Veterinary and Animal Sciences University | India |
| Historic Environment Scotland | Scotland |
| Library of Congress | USA |
| National Institute of Informatics (NII) | Japan |
| University of Florida | USA |
| National Agricultural Library | USA |
| University of Maryland College Park | USA |
| Court Library | USA |
| Centre for Media and Celebrity Studies | Canada |
| APO | Australia |
| Nw07 | UK |
| United Nations Vienna | Austria |
| Brooke Army Medical center | USA |
| Torrens University | Australia |
| GeoScienceWorld | USA |
| Irvine Valley College | USA |
| RIT | USA |
| Maritime Raja Ali Haji University | Indonesia |
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