The top list of academic search engines

academic search engines

1. Google Scholar

4. science.gov, 5. semantic scholar, 6. baidu scholar, get the most out of academic search engines, frequently asked questions about academic search engines, related articles.

Academic search engines have become the number one resource to turn to in order to find research papers and other scholarly sources. While classic academic databases like Web of Science and Scopus are locked behind paywalls, Google Scholar and others can be accessed free of charge. In order to help you get your research done fast, we have compiled the top list of free academic search engines.

Google Scholar is the clear number one when it comes to academic search engines. It's the power of Google searches applied to research papers and patents. It not only lets you find research papers for all academic disciplines for free but also often provides links to full-text PDF files.

  • Coverage: approx. 200 million articles
  • Abstracts: only a snippet of the abstract is available
  • Related articles: ✔
  • References: ✔
  • Cited by: ✔
  • Links to full text: ✔
  • Export formats: APA, MLA, Chicago, Harvard, Vancouver, RIS, BibTeX

Search interface of Google Scholar

BASE is hosted at Bielefeld University in Germany. That is also where its name stems from (Bielefeld Academic Search Engine).

  • Coverage: approx. 136 million articles (contains duplicates)
  • Abstracts: ✔
  • Related articles: ✘
  • References: ✘
  • Cited by: ✘
  • Export formats: RIS, BibTeX

Search interface of Bielefeld Academic Search Engine aka BASE

CORE is an academic search engine dedicated to open-access research papers. For each search result, a link to the full-text PDF or full-text web page is provided.

  • Coverage: approx. 136 million articles
  • Links to full text: ✔ (all articles in CORE are open access)
  • Export formats: BibTeX

Search interface of the CORE academic search engine

Science.gov is a fantastic resource as it bundles and offers free access to search results from more than 15 U.S. federal agencies. There is no need anymore to query all those resources separately!

  • Coverage: approx. 200 million articles and reports
  • Links to full text: ✔ (available for some databases)
  • Export formats: APA, MLA, RIS, BibTeX (available for some databases)

Search interface of Science.gov

Semantic Scholar is the new kid on the block. Its mission is to provide more relevant and impactful search results using AI-powered algorithms that find hidden connections and links between research topics.

  • Coverage: approx. 40 million articles
  • Export formats: APA, MLA, Chicago, BibTeX

Search interface of Semantic Scholar

Although Baidu Scholar's interface is in Chinese, its index contains research papers in English as well as Chinese.

  • Coverage: no detailed statistics available, approx. 100 million articles
  • Abstracts: only snippets of the abstract are available
  • Export formats: APA, MLA, RIS, BibTeX

Search interface of Baidu Scholar

RefSeek searches more than one billion documents from academic and organizational websites. Its clean interface makes it especially easy to use for students and new researchers.

  • Coverage: no detailed statistics available, approx. 1 billion documents
  • Abstracts: only snippets of the article are available
  • Export formats: not available

Search interface of RefSeek

Consider using a reference manager like Paperpile to save, organize, and cite your references. Paperpile integrates with Google Scholar and many popular databases, so you can save references and PDFs directly to your library using the Paperpile buttons:

scientific papers search engine

Google Scholar is an academic search engine, and it is the clear number one when it comes to academic search engines. It's the power of Google searches applied to research papers and patents. It not only let's you find research papers for all academic disciplines for free, but also often provides links to full text PDF file.

Semantic Scholar is a free, AI-powered research tool for scientific literature developed at the Allen Institute for AI. Sematic Scholar was publicly released in 2015 and uses advances in natural language processing to provide summaries for scholarly papers.

BASE , as its name suggest is an academic search engine. It is hosted at Bielefeld University in Germany and that's where it name stems from (Bielefeld Academic Search Engine).

CORE is an academic search engine dedicated to open access research papers. For each search result a link to the full text PDF or full text web page is provided.

Science.gov is a fantastic resource as it bundles and offers free access to search results from more than 15 U.S. federal agencies. There is no need any more to query all those resources separately!

scientific papers search engine

A free, AI-powered research tool for scientific literature

  • Michael Atiyah
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Introducing semantic reader in beta.

Stay Connected With Semantic Scholar Sign Up What Is Semantic Scholar? Semantic Scholar is a free, AI-powered research tool for scientific literature, based at the Allen Institute for AI.

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arXiv is a free distribution service and an open-access archive for nearly 2.4 million scholarly articles in the fields of physics, mathematics, computer science, quantitative biology, quantitative finance, statistics, electrical engineering and systems science, and economics. Materials on this site are not peer-reviewed by arXiv.

arXiv is a free distribution service and an open-access archive for scholarly articles in the fields of physics, mathematics, computer science, quantitative biology, quantitative finance, statistics, electrical engineering and systems science, and economics. Materials on this site are not peer-reviewed by arXiv.

Stay up to date with what is happening at arXiv on our blog.

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  • Astrophysics ( astro-ph new , recent , search ) includes: Astrophysics of Galaxies ; Cosmology and Nongalactic Astrophysics ; Earth and Planetary Astrophysics ; High Energy Astrophysical Phenomena ; Instrumentation and Methods for Astrophysics ; Solar and Stellar Astrophysics
  • Condensed Matter ( cond-mat new , recent , search ) includes: Disordered Systems and Neural Networks ; Materials Science ; Mesoscale and Nanoscale Physics ; Other Condensed Matter ; Quantum Gases ; Soft Condensed Matter ; Statistical Mechanics ; Strongly Correlated Electrons ; Superconductivity
  • General Relativity and Quantum Cosmology ( gr-qc new , recent , search )
  • High Energy Physics - Experiment ( hep-ex new , recent , search )
  • High Energy Physics - Lattice ( hep-lat new , recent , search )
  • High Energy Physics - Phenomenology ( hep-ph new , recent , search )
  • High Energy Physics - Theory ( hep-th new , recent , search )
  • Mathematical Physics ( math-ph new , recent , search )
  • Nonlinear Sciences ( nlin new , recent , search ) includes: Adaptation and Self-Organizing Systems ; Cellular Automata and Lattice Gases ; Chaotic Dynamics ; Exactly Solvable and Integrable Systems ; Pattern Formation and Solitons
  • Nuclear Experiment ( nucl-ex new , recent , search )
  • Nuclear Theory ( nucl-th new , recent , search )
  • Physics ( physics new , recent , search ) includes: Accelerator Physics ; Applied Physics ; Atmospheric and Oceanic Physics ; Atomic and Molecular Clusters ; Atomic Physics ; Biological Physics ; Chemical Physics ; Classical Physics ; Computational Physics ; Data Analysis, Statistics and Probability ; Fluid Dynamics ; General Physics ; Geophysics ; History and Philosophy of Physics ; Instrumentation and Detectors ; Medical Physics ; Optics ; Physics and Society ; Physics Education ; Plasma Physics ; Popular Physics ; Space Physics
  • Quantum Physics ( quant-ph new , recent , search )

Mathematics

  • Mathematics ( math new , recent , search ) includes: (see detailed description ): Algebraic Geometry ; Algebraic Topology ; Analysis of PDEs ; Category Theory ; Classical Analysis and ODEs ; Combinatorics ; Commutative Algebra ; Complex Variables ; Differential Geometry ; Dynamical Systems ; Functional Analysis ; General Mathematics ; General Topology ; Geometric Topology ; Group Theory ; History and Overview ; Information Theory ; K-Theory and Homology ; Logic ; Mathematical Physics ; Metric Geometry ; Number Theory ; Numerical Analysis ; Operator Algebras ; Optimization and Control ; Probability ; Quantum Algebra ; Representation Theory ; Rings and Algebras ; Spectral Theory ; Statistics Theory ; Symplectic Geometry

Computer Science

  • Computing Research Repository ( CoRR new , recent , search ) includes: (see detailed description ): Artificial Intelligence ; Computation and Language ; Computational Complexity ; Computational Engineering, Finance, and Science ; Computational Geometry ; Computer Science and Game Theory ; Computer Vision and Pattern Recognition ; Computers and Society ; Cryptography and Security ; Data Structures and Algorithms ; Databases ; Digital Libraries ; Discrete Mathematics ; Distributed, Parallel, and Cluster Computing ; Emerging Technologies ; Formal Languages and Automata Theory ; General Literature ; Graphics ; Hardware Architecture ; Human-Computer Interaction ; Information Retrieval ; Information Theory ; Logic in Computer Science ; Machine Learning ; Mathematical Software ; Multiagent Systems ; Multimedia ; Networking and Internet Architecture ; Neural and Evolutionary Computing ; Numerical Analysis ; Operating Systems ; Other Computer Science ; Performance ; Programming Languages ; Robotics ; Social and Information Networks ; Software Engineering ; Sound ; Symbolic Computation ; Systems and Control

Quantitative Biology

  • Quantitative Biology ( q-bio new , recent , search ) includes: (see detailed description ): Biomolecules ; Cell Behavior ; Genomics ; Molecular Networks ; Neurons and Cognition ; Other Quantitative Biology ; Populations and Evolution ; Quantitative Methods ; Subcellular Processes ; Tissues and Organs

Quantitative Finance

  • Quantitative Finance ( q-fin new , recent , search ) includes: (see detailed description ): Computational Finance ; Economics ; General Finance ; Mathematical Finance ; Portfolio Management ; Pricing of Securities ; Risk Management ; Statistical Finance ; Trading and Market Microstructure
  • Statistics ( stat new , recent , search ) includes: (see detailed description ): Applications ; Computation ; Machine Learning ; Methodology ; Other Statistics ; Statistics Theory

Electrical Engineering and Systems Science

  • Electrical Engineering and Systems Science ( eess new , recent , search ) includes: (see detailed description ): Audio and Speech Processing ; Image and Video Processing ; Signal Processing ; Systems and Control
  • Economics ( econ new , recent , search ) includes: (see detailed description ): Econometrics ; General Economics ; Theoretical Economics

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Birds, bees and even plants might act weird during the solar eclipse.

A total eclipse isn’t just a spectacle in the sky. Birds, insects and even plants will take notice, and might start acting strange.

Experimental gene therapy for giant axonal neuropathy shows promise in NIH clinical trial

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Immune Checkpoint Discovery Has Implications for Treating Cancer and Autoimmune Diseases

Your immune system should ideally recognize and attack infectious invaders and cancerous cells. But the system requires safety mechanisms, or brakes, to keep it from damaging healthy cells. To do this, T cells—the immune system’s most powerful attackers—rely on immune “checkpoints” to turn immune activation down when they receive the right signal. While these interactions have been well studied, a research team supported in part by NIH has made an unexpected discovery into how a key immune checkpoint works, with potentially important implications for therapies designed to boost or dampen immune activity to treat cancer and autoimmune diseases.

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  • 07 August 2023
  • Correction 09 August 2023

Artificial-intelligence search engines wrangle academic literature

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Amanda Heidt is a science writer in Moab, Utah.

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For a researcher so focused on the past, Mushtaq Bilal spends a lot of time immersed in the technology of tomorrow.

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Correction 09 August 2023 : An earlier version of this article gave the incorrect title for Mohammed Yisa.

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English dominates scientific research – here’s how we can fix it, and why it matters

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It is often remarked that Spanish should be more widely spoken or understood in the scientific community given its number of speakers around the world, a figure the Instituto Cervantes places at almost 600 million .

However, millions of speakers do not necessarily grant a language strength in academia. This has to be cultivated on a scientific, political and cultural level, with sustained efforts from many institutions and specialists.

The scientific community should communicate in as many languages as possible

By some estimates, as much as 98% of the world’s scientific research is published in English , while only around 18% of the world’s population speaks it. This makes it essential to publish in other languages if we are to bring scientific research to society at large.

The value of multilingualism in science has been highlighted by numerous high profile organisations, with public declarations and statements on the matter from the European Charter for Researchers , the Helsinki Initiative on Multiligualism , the Unesco Recommendation on Open Science , the OPERAS Multiligualism White Paper , the Latin American Forum on Research Assessment , the COARA Agreement on Reforming Research Assessment , and the Declaration of the 5th Meeting of Minsters and Scientific Authorities of Ibero-American Countries . These organisations all agree on one thing: all languages have value in scientific communication .

As the last of these declarations points out, locally, regionally and nationally relevant research is constantly being published in languages other than English. This research has an economic, social and cultural impact on its surrounding environment, as when scientific knowledge is disseminated it filters through to non-academic professionals, thus creating a broader culture of knowledge sharing.

Greater diversity also enables fluid dialogue among academics who share the same language, or who speak and understand multiple languages. In Ibero-America, for example, Spanish and Portuguese can often be mutually understood by non-native speakers, allowing them to share the scientific stage. The same happens in Spain with the majority of its co-official languages .

Read more: Non-native English speaking scientists work much harder just to keep up, global research reveals

No hierarchies, no categories

Too often, scientific research in any language other than English is automatically seen as second tier, with little consideration for the quality of the work itself.

This harmful prejudice ignores the work of those involved, especially in the humanities and social sciences. It also profoundly undermines the global academic community’s ability to share knowledge with society.

By defending and preserving multilingualism, the scientific community brings research closer to those who need it. Failing to pursue this aim means that academia cannot develop or expand its audience. We have to work carefully, systematically and consistently in every language available to us.

Read more: Prestigious journals make it hard for scientists who don't speak English to get published. And we all lose out

The logistics of strengthening linguistic diversity in science

Making a language stronger in academia is a complex process. It does not happen spontaneously, and requires careful coordination and planning. Efforts have to come from public and private institutions, the media, and other cultural outlets, as well as from politicians, science diplomacy , and researchers themselves.

Many of these elements have to work in harmony, as demonstrated by the Spanish National Research Council’s work in ES CIENCIA , a project which seeks to unite scientific and and political efforts.

Academic publishing and AI models: a new challenge

The global academic environment is changing as a result the digital transition and new models of open access. Research into publishers of scientific content in other languages will be essential to understanding this shift. One thing is clear though: making scientific content produced in a particular language visible and searchable online is crucial to ensuring its strength.

In the case of academic books, the transition to open access has barely begun , especially in the commercial publishing sector, which releases around 80% of scientific books in Spain. As with online publishing, a clear understanding will make it possible to design policies and models that account for the different ways of disseminating scientific research, including those that communicate locally and in other languages. Greater linguistic diversity in book publishing can also allow us to properly recognise the work done by publishers in sharing research among non-English speakers.

Read more: Removing author fees can help open access journals make research available to everyone

Making publications, datasets, and other non-linguistic research results easy to find is another vital element, which requires both scientific and technical support. The same applies to expanding the corpus of scientific literature in Spanish and other languages, especially since this feeds into generative artificial intelligence models.

If linguistically diverse scientific content is not incorporated into AI systems, they will spread information that is incomplete, biased or misleading: a recent Spanish government report on the state of Spanish and co-official languages points out that 90% of the text currently fed into AI is written in English.

Deep study of terminology is essential

Research into terminology is of the utmost importance in preventing the use of improvised, imprecise language or unintelligible jargon. It can also bring huge benefits for the quality of both human and machine translations, specialised language teaching, and the indexing and organisation of large volumes of documents.

Terminology work in Spanish is being carried out today thanks to the processing of large language corpuses by AI and researchers in the TeresIA project, a joint effort coordinated by the Spanish National Research Council. However, 15 years of ups and downs were needed to to get such a project off the ground in Spanish.

The Basque Country, Catalonia and Galicia, on the other hand, have worked intensively and systematically on their respective languages. They have not only tackled terminology as a public language policy issue, but have also been committed to established terminology projects for a long time.

Multiligualism is a global issue

This need for broader diversity also applies to Ibero-America as a whole, where efforts are being coordinated to promote Spanish and Portuguese in academia, notably by the Ibero-American General Secretariat and the Mexican National Council of Humanities, Sciences and Technologies .

While this is sorely needed, we cannot promote the region’s two most widely spoken languages and also ignore its diversity of indigenous and co-official languages. These are also involved in the production of knowledge, and are a vehicle for the transfer of scientific information, as demonstrated by efforts in Spain.

Each country has its own unique role to play in promoting greater linguistic diversity in scientific communication. If this can be achieved, the strength of Iberian languages – and all languages, for that matter – in academia will not be at the mercy of well intentioned but sporadic efforts. It will, instead, be the result of the scientific community’s commitment to a culture of knowledge sharing.

This article was originally published in Spanish

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  1. Google Scholar

    Google Scholar provides a simple way to broadly search for scholarly literature. Search across a wide variety of disciplines and sources: articles, theses, books, abstracts and court opinions.

  2. ScienceDirect.com

    Keep up to date with health and medical developments to stimulate research and improve patient care. Search our books and journals covering education, reference information, decision support and more. Actas Dermo-Sifiliográficas (English Edition), Volume 111, Issue 4. Resuscitation, Volume 83, Issue 11. FEBS Letters, Volume 584, Issue 9.

  3. The best academic search engines [Update 2024]

    Academic search engines have become the number one resource to turn to in order to find research papers and other scholarly sources. While classic academic databases like Web of Science and Scopus are locked behind paywalls, Google Scholar and others can be accessed free of charge. In order to help you get your research done fast, we have compiled the top list of free academic search engines.

  4. Semantic Scholar

    Semantic Reader is an augmented reader with the potential to revolutionize scientific reading by making it more accessible and richly contextual. Try it for select papers. Semantic Scholar uses groundbreaking AI and engineering to understand the semantics of scientific literature to help Scholars discover relevant research.

  5. List of academic databases and search engines

    This article contains a representative list of notable databases and search engines useful in an academic setting for finding and accessing articles in academic journals, institutional repositories, archives, or other collections of scientific and other articles. Databases and search engines differ substantially in terms of coverage and retrieval qualities.

  6. arXiv.org e-Print archive

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    Search all biomedical databases provided by the National Center for Biotechnology Information (NCBI), an agency of the U.S. National Library of Medicine at the NIH. Skip to main page content. ... At this year's NLM Science, Technology, and Society Lecture, journalist and AI ethics expert Meredith Broussard shared how her personal experience ...

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    Harness the power of visual materials—explore more than 3 million images now on JSTOR. Enhance your scholarly research with underground newspapers, magazines, and journals. Explore collections in the arts, sciences, and literature from the world's leading museums, archives, and scholars. JSTOR is a digital library of academic journals ...

  13. 28 Best Academic Search Engines That make your research easier

    DOAJ is a free search engine for scientific and scholarly materials. It is a searchable database with over 8,000 peer-reviewed research papers organized by subject. It's one of the most comprehensive libraries of scientific and scholarly resources, with over 8,000 journals available on a variety of themes.

  14. Resources for Finding and Accessing Scientific Papers

    The pages you get back will be a wide mixture of websites, and very few will be links to peer-reviewed scientific papers. To find scientific literature, the best thing to use is an academic search engine. There are many different academic search engines. Some focus on a single discipline, while others have citations from multiple fields.

  15. Web of Science Master Journal List

    Browse, search, and explore journals indexed in the Web of Science. The Master Journal List is an invaluable tool to help you to find the right journal for your needs across multiple indices hosted on the Web of Science platform. Spanning all disciplines and regions, Web of Science Core Collection is at the heart of the Web of Science platform. Curated with care by an expert team of in-house ...

  16. Find a journal

    Elsevier Journal Finder helps you find journals that could be best suited for publishing your scientific article. Journal Finder uses smart search technology and field-of-research specific vocabularies to match your paper's abstract to scientific journals.

  17. CORE

    Research Policy Adviser. Aggregation plays an increasingly essential role in maximising the long-term benefits of open access, helping to turn the promise of a 'research commons' into a reality. The aggregation services that CORE provides therefore make a very valuable contribution to the evolving open access environment in the UK.

  18. AI science search engines are exploding in number

    The explosion of tools powered by artificial intelligence (AI) includes several search engines that aim to make it easier for researchers to grasp seminal scientific papers or summarize a field ...

  19. Wiley Online Library

    One of the largest and most authoritative collections of online journals, books, and research resources, covering life, health, social, and physical sciences.

  20. ScienceOpen

    Make an impact and build your research profile in the open with ScienceOpen. Search and discover relevant research in over 93 million Open Access articles and article records; Share your expertise and get credit by publicly reviewing any article; Publish your poster or preprint and track usage and impact with article- and author-level metrics; Create a topical Collection to advance your ...

  21. Artificial-intelligence search engines wrangle academic literature

    This new generation of search engines, powered by machine learning and large language models, is moving beyond keyword searches to pull connections from the tangled web of the scientific literature.

  22. The best AI tools for research papers and academic research (Literature

    AI-powered tools like Semantic Scholar and elicit.org use sophisticated search engines to quickly identify relevant papers. They can mine key information from countless PDFs, drastically reducing research time. ... literature review, peer-reviewed papers reading, scientific writing, to academic editing and grant writing - the landscape of ...

  23. English dominates scientific research

    The scientific community should communicate in as many languages as possible By some estimates, as much as 98% of the world's scientific research is published in English , while only around 18% ...