arXiv is an open-access repository of electronic preprints and postprints approved for posting after moderation, but not peer review. It consists of scientific papers in the fields of mathematics, physics, astronomy, electrical engineering, computer science, quantitative biology, statistics, mathematical finance and economics, which can be accessed online. In many fields of mathematics and physics, almost all scientific papers are self-archived on the arXiv repository before publication in a peer-reviewed journal. Some publishers also grant permission for authors to archive the peer-reviewed postprint. Begun on August 14, 1991, arXiv.org passed the half-million-article milestone on October 3, 2008, had hit a million by the end of 2014 and two million by the end of 2021. As of April 2021, the submission rate is about 16,000 articles per month.
CiteSeerX is a public search engine and digital library for scientific and academic papers, primarily in the fields of computer and information science.
Open access (OA) is a set of principles and a range of practices through which research outputs are distributed online, free of access charges or other barriers. With open access strictly defined, or libre open access, barriers to copying or reuse are also reduced or removed by applying an open license for copyright.
PubMed Central (PMC) is a free digital repository that archives open access full-text scholarly articles that have been published in biomedical and life sciences journals. As one of the major research databases developed by the National Center for Biotechnology Information (NCBI), PubMed Central is more than a document repository. Submissions to PMC are indexed and formatted for enhanced metadata, medical ontology, and unique identifiers which enrich the XML structured data for each article. Content within PMC can be linked to other NCBI databases and accessed via Entrez search and retrieval systems, further enhancing the public's ability to discover, read and build upon its biomedical knowledge.
Self-archiving is the act of depositing a free copy of an electronic document online in order to provide open access to it. The term usually refers to the self-archiving of peer-reviewed research journal and conference articles, as well as theses and book chapters, deposited in the author's own institutional repository or open archive for the purpose of maximizing its accessibility, usage and citation impact. The term green open access has become common in recent years, distinguishing this approach from gold open access, where the journal itself makes the articles publicly available without charge to the reader.
Europe PubMed Central is an open-access repository that contains millions of biomedical research works. It was known as UK PubMed Central until 1 November 2012.
hprints is an archive for electronic preprints of academic papers in the fields of arts and humanities. It can be accessed freely via the Internet since it is an open access repository aiming at making scholarly documents publicly available to the widest possible audience.
The Symposium on Theoretical Aspects of Computer Science (STACS) is an academic conference in the field of computer science. It is held each year, alternately in Germany and France, since 1984. Typical themes of the conference include algorithms, computational and structural complexity, automata, formal languages and logic.
Academia.edu is a for-profit open repository of academic articles free to read by visitors. Uploading and downloading is restricted to registered users. Additional features are accessible only as a paid subscription. Since 2016 various social networking utilities have been added.
An open-access mandate is a policy adopted by a research institution, research funder, or government which requires or recommends researchers—usually university faculty or research staff and/or research grant recipients—to make their published, peer-reviewed journal articles and conference papers open access (1) by self-archiving their final, peer-reviewed drafts in a freely accessible institutional repository or disciplinary repository or (2) by publishing them in an open-access journal or both.
The Centre pour la Communication Scientifique Directe (CCSD) is a French organization of the Centre National de la Recherche Scientifique (CNRS) devoted to the development of the open access repositories HAL, TEL and MediHal, and the web platform SciencesConf.org. It is involved in the international open access movement.
CORE is a service provided by the Knowledge Media Institute based at The Open University, United Kingdom. The goal of the project is to aggregate all open access content distributed across different systems, such as repositories and open access journals, enrich this content using text mining and data mining, and provide free access to it through a set of services. The CORE project also aims to promote open access to scholarly outputs. CORE works closely with digital libraries and institutional repositories.
Zenodo is a general-purpose open repository developed under the European OpenAIRE program and operated by CERN. It allows researchers to deposit research papers, data sets, research software, reports, and any other research related digital artefacts. For each submission, a persistent digital object identifier (DOI) is minted, which makes the stored items easily citeable.
ISIDORE is an online platform that allows research and access to human and social sciences digital data. It's a research assistant for humanists.
Open access to scholarly communication in Germany has evolved rapidly since the early 2000s. Publishers Beilstein-Institut, Copernicus Publications, De Gruyter, Knowledge Unlatched, Leibniz Institute for Psychology Information, ScienceOpen, Springer Nature, and Universitätsverlag Göttingen belong to the international Open Access Scholarly Publishers Association.
In Belgium, open access to scholarly communication accelerated after 2007 when the University of Liège adopted its first open-access mandate. The "Brussels Declaration" for open access was signed by officials in 2012.
In France, open access to scholarly communication is relatively robust and has strong public support. Revues.org, a digital platform for social science and humanities publications, launched in 1999. Hyper Articles en Ligne (HAL) began in 2001. The French National Center for Scientific Research participated in 2003 in the creation of the influential Berlin Declaration on Open Access to Knowledge in the Sciences and Humanities. Publishers EDP Sciences and OpenEdition belong to the international Open Access Scholarly Publishers Association.
In Spain, the national 2011 "Ley de la Ciencia, la Tecnología y la Innovación" requires open access publishing for research that has been produced with public funding. The first peer-reviewed open access Spanish journal, Relieve, began in 1995. Publishers CSIC Press and Hipatia Press belong to the international Open Access Scholarly Publishers Association.
