The top list of academic search engines
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.
1. Google Scholar
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
2. BASE
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: ✘
- Links to full text: ✔
- Export formats: RIS, BibTeX
3. CORE
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
- Abstracts: ✔
- Related articles: ✔
- References: ✘
- Cited by: ✘
- Links to full text: ✔ (all articles in CORE are open access)
- Export formats: BibTeX
4. Science.gov
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
- Abstracts: ✔
- Related articles: ✘
- References: ✘
- Cited by: ✘
- Links to full text: ✔ (available for some databases)
- Export formats: APA, MLA, RIS, BibTeX (available for some databases)
5. Semantic Scholar
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
- Abstracts: ✔
- Related articles: ✔
- References: ✔
- Cited by: ✔
- Links to full text: ✔
- Export formats: APA, MLA, Chicago, BibTeX
6. Baidu 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
- Related articles: ✔
- References: ✔
- Cited by: ✘
- Links to full text: ✔
- Export formats: APA, MLA, RIS, BibTeX
7. RefSeek
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
- Related articles: ✘
- References: ✘
- Cited by: ✘
- Links to full text: ✔
- Export formats: not available
Get the most out of academic search engines
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:
Frequently Asked Questions about academic search engines
🛎️ What is Google Scholar?
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.
🎈 What is Semantic Scholar?
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.
⌚ What is BASE?
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).
⛱️ What is CORE?
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.
🧳 What is Science.gov?
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!
