1. Sci-Hub
Sci-Hub is a website link with over 64.5 million academic papers and articles available for direct download. It bypasses publisher paywalls by allowing access through educational institution proxies. To download papers Sci-Hub stores papers in its repository, this storage is called Library Genesis (LibGen) or library genesis proxy 2023.
2. Z-Library
Z-Library is a clone of Library Genesis, a shadow library project that allows users to share scholarly journal articles, academic texts, and general-interest books via file sharing (some of which are pirated). The majority of its books come from Library Genesis, however, some are posted directly to the site by individuals.
Individuals can also donate to the website’s repository to make literature more widely available. Z-library claims to have more than 10,139,382 Books and 84,837,646 Articles articles as of April 25, 2023.
It promises to be “the world’s largest e-book library” as well as “the world’s largest scientific papers repository,” according to the project’s page for academic publications (at booksc.org). Z-library also describes itself as a donation-based non-profit organization.
3. Library Genesis
The Library Genesis aggregator is a community aiming at collecting and cataloging item descriptions for the most part of scientific, scientific, and technical directions, as well as file metadata. In addition to the descriptions, the aggregator contains only links to third-party resources hosted by users. All information posted on the website is collected from publicly available public Internet resources and is intended solely for informational purposes.
4. Unpaywall
Unpaywall harvests Open Access content from over 50,000 publishers and repositories, and makes it easy to find, track, and use. It is integrated into thousands of library systems, search platforms, and other information products worldwide. In fact, if you’re involved in scholarly communication, there’s a good chance you’ve already used Unpaywall data.
Unpaywall is run by OurResearch, a nonprofit dedicated to making scholarships more accessible to everyone. Open is our passion. So it’s only natural our source code is open, too.
5. GetTheResearch.org
GetTheResearch.org is an Artificial Intelligence(AI) powered search engine for search and understand scientific articles for researchers and scientists. It was developed as a part of the Unpaywall project. Unpaywall is a database of 23,329,737 free scholarly Open Access(OA) articles from over 50,000 publishers and repositories, and make it easy to find, track, and use.
6. Directory of Open Access Journals (DOAJ)
DOAJ (Directory of Open Access Journals) was launched in 2003 with 300 open-access journals. Today, this independent index contains almost 17 500 peer-reviewed, open-access journals covering all areas of science, technology, medicine, social sciences, arts, and humanities. Open-access journals from all countries and in all languages are accepted for indexing.
DOAJ is financially supported by many libraries, publishers, and other like-minded organizations. Supporting DOAJ demonstrates a firm commitment to open access and the infrastructure that supports it.
7. Researcher
The researcher is a free journal-finding mobile application that helps you to read new journal papers every day that are relevant to your research. It is the most popular mobile application used by more than 3 million scientists and researchers to keep themselves updated with the latest academic literature.
8. Science Open
ScienceOpen is a discovery platform with interactive features for scholars to enhance their research in the open, make an impact, and receive credit for it. It provides context-building services for publishers, to bring researchers closer to the content than ever before. These advanced search and discovery functions, combined with post-publication peer review, recommendation, social sharing, and collection-building features make ScienceOpen the only research platform you’ll ever need.
9. OA.mg
OA.mg is a search engine for academic papers. Whether you are looking for a specific paper, or for research from a field, or all of an author’s works – OA.mg is the place to find it.
10. Internet Archive Scholar
Internet Archive Scholar (IAS) is a full-text search index that includes over 25 million research articles and other scholarly documents preserved in the Internet Archive. The collection spans from digitized copies of eighteenth-century journals through the latest Open Access conference proceedings and pre-prints crawled from the World Wide Web.
11. Citationsy Archives
Citationsy was founded in 2017 after the reference manager Cenk was using at the time, RefMe, was shut down. It was immediately obvious that the reason people loved RefMe — a clean interface, speed, no ads, simplicity of use — did not apply to CiteThisForMe. It turned out to be easier than anticipated to get a rough prototype up.
12. CORE
CORE is the world’s largest aggregator of open-access research papers from repositories and journals. It is a not-for-profit service dedicated to the open-access mission. We serve the global network of repositories and journals by increasing the discoverability and reuse of open-access content.
It provides solutions for content management, discovery, and scalable machine access to research. Our services support a wide range of stakeholders, specifically researchers, the general public, academic institutions, developers, funders, and companies from a diverse range of sectors including but not limited to innovators, AI technology companies, digital library solutions, and pharma.
13. Dimensions
Dimensions cover millions of research publications connected by more than 1.6 billion citations, supporting grants, datasets, clinical trials, patents, and policy documents.
Dimensions are the most comprehensive research grants database that links grants to millions of resulting publications, clinical trials, and patents. It
provides up-to-the-minute online attention data via Altmetric, showing you how often publications and clinical trials are discussed around the world. 226m Altmetric mentions with 17m links to publications.
Dimensions include datasets from repositories such as Figshare, Dryad, Zenodo, Pangaea, and many more. It hosts millions of patents with links to other citing patents as well as to publications and supporting grants.