Internet is all about delivering information. Apart from chatting with friends on Facebook, watching videos on YouTube or shopping online at Amazon, you can also make use of the Web for academic purposes. There are many great websites out there that allow students, researcher and librarians searching for valuable academic journals and scholarly articles.

Here we’ve gathered 100 online databases and search engines where you can find great journals, articles, and books online for your academic and publishing success. If you know of any other worth-sharing sites, let us know in the comments section below.

1. Google Scholar
Google Scholar lets you search full text of scholarly literature across an array of publishing formats and disciplines. The web search engine index includes most peer-reviewed online journals of Europe and America’s largest scholarly publishers, plus scholarly books and other non-peer reviewed journals.

2. ScienceDirect
ScienceDirect is the world’s leading source for scientific, technical, and medical research. It hosts over 12 million pieces of content from 3,500 academic journals and 34,000 e-books.

3. ReaserchGate
ResearchGate is the professional social network for scientists and researchers to share, discover, and discuss research. The network has more than 118 million publication pages, 15 million researchers and over 700k projects. Users can use its blogging feature to write short reviews on peer-reviewed articles.

4. Springerlink
Springerlink provides researchers with access to millions of scientific documents from journals, books, series, protocols and reference works. It covers a variety of topics in the sciences, social sciences, and humanities.

5. VET-Bib
VET-Bib is a bibliographic database covering European vocational education and training (VET) literature.

6. Academia.edu
Academia.edu is a platform for academics to follow and share research papers. The site currently has over 1 million registered users who actively share papers in any field, monitor the impact of their research, and track the research of academics they follow.

7. ArXiv.org e-Print Archive
ArXiv is a repository of e-prints approved for publication after moderation, that consists of scientific papers in the fields of mathematics, physics, astronomy, electrical engineering, computer science, statistics, and quantitative finance, which can be accessed online.

8. Astrophysics Data System
The Astrophysics Data System is an online database of over 8 million astronomy and physics papers from both peer reviewed and non-peer reviewed sources.

9. Google Books
Google Books lets users to search the full text of books and magazines that Google has scanned and converted to text using optical character recognition, and stored in its digital database.

10. Google Correlate
Google Correlate lets users to find search patterns which correspond with real-world trends. It gives researchers info on popularity trends, raw data and thematically-related search terms.

11. ERIC
ERIC is one of the largest digital libraries of educational literature. The education resources information site provides ready access to education literature to support the use of educational research and information to improve practice in learning, teaching, and research.

12. Microsoft Academic Search
Similar to Google Scholar, Microsoft Academic Search lets you explore information about academic papers, authors, conferences, and journals. It covers more than 38 million publications and over 19 million authors across a variety of domains with updates added each week.

13. Oxford Academic Journals Search
This is Oxford University Press website for academic and professional books, journals, reference, and online products. You can search its huge volume of data which is currently archived in numerous open-access databases.

14. JSTOR
JSTOR is an online system for archiving academic journals. It provides its member institutions full-text searches of digitized back issues of several hundred well-known journals. Membership in JSTOR is held by 7,000 institutions in 159 countries.

15. Behavioral and Brain Sciences
Behavioral and Brain Sciences is a peer-reviewed scientific journal of Open Peer Commentary where you can search for an extensive psychology and brain science articles.

16. PubChem
PubChem is a database of chemical molecules and their activities against biological assays. Millions of compound structures and descriptive datasets can be downloaded via FTP. PubChem contains substance descriptions and small molecules with fewer than 1000 atoms and 1000 bonds.

17. PubMed
PubMed is a free search engine accessing primarily the MEDLINE database of references and abstracts on life sciences and biomedical topics.

18. CiteSeerX
CiteSxeerX project is funded by the National Science Foundation, is a public integrated digital library, database, and search engine for scientific papers in chemistry. The goal of this project is to develop an intelligent search and database that provides easy access to relevant data for diverse community of users who need for chemical information.

19. Semantic Scholar
Semantic Scholar is an academic search engine that utilizes artificial intelligence methods to provide highly relevant results for journal articles. It is designed to quickly highlight the most important papers and identify the connections between them. It currently includes on computer science and biomedical publications.

20. Web of Science
Web of Science is an online subscription-based scientific citation indexing service that provides a comprehensive citation search. It gives access to multiple databases that reference cross-disciplinary research allowing in-depth exploration of specialized sub-fields within an academic or scientific discipline.

21. Analytical Abstracts
Analytical Abstracts is a literature updating service that keeps researchers and students informed of the latest developments in analytical science. It includes details of the most relevant literature presented as individual records that are easily searchable by analyte, matrix, technique and subject area.

22. Merck Index
Merck Index is an encyclopedia of chemicals, drugs and biologicals offering more than 10,000 monographs on single substances or groups of related compounds published online by the Royal Society of Chemistry.

23. MedlinePlus
MedlinePlus is an online information service created by the United States National Library of Medicine. The service provides curated consumer health information and brings together information from the National Library of Medicine, the National Institutes of Health, other U.S. government agencies, and health-related organizations.

24. Agricola
Agricola is a bibliographic database of citations to the agricultural literature created by the National Agricultural Library. The database indexes a wide variety of publications covering agriculture and its allied fields, including, animal and veterinary sciences, entomology, plant sciences, forestry, aquaculture, fisheries, and many more.

25. AGRIS: Agricultural Database
AGRIS is a global public domain database with more than 8 million structured bibliographical records on agricultural science and technology. The AGRIS Search system allows scientists, researchers to perform sophisticated searches using keywords, journal titles or names of countries, institutions, and authors.

26. WorldCat
WorldCat is a global catalog of library collections. It enables you to search over 1.5 billion items including books, DVDs, CDs, articles and more.

27. IOPscience
IOPscience is an online service for journal content published by IOP Publishing. It embraces innovative technologies to make it easier for researchers to access scientific, technical and medical content.

28. PLUS ONE
PLOS One is a peer-reviewed open access scientific journal published by the Public Library of Science (PLOS) since 2006. It covers primary research from any discipline within science and medicine.

29. Scopus
Elsevier’s Scopus is one of the largest abstract and citation databases of peer-reviewed literature. You can search and access research for science, technology, medicine, etc.

30. Advanced Technologies & Aerospace Database
The Advanced Technologies & Aerospace Database provides extensive coverage of advanced technology literature. It features over 26 million A&I records and more than 250 full-text titles that date back to 1962. Its topics cover aeronautics, communications, computer and IT, electronics, lasers, space sciences, telecommunications and many more.

31. Air University Library Index to Military Periodicals (AULIMP)
AULIMP is a subject index to significant articles, news items, and editorials from about 80 English language military and aeronautical periodicals. It has had two titles in its history.

32. ACM Digital Library
The ACM Digital Library is a research and networking platform that provides a comprehensive bibliographic database focused exclusively on the field of computing. It has full-text collection of all ACM publications, including journals, conference proceedings, technical magazines, newsletters and books.

33. Project MUSE
Project MUSE is an online source for quality books and journals in the humanities and social sciences from over 200 of the world’s most distinguished university presses and scholarly societies.

34. Ulrich’s Periodicals Directory
Ulrich’s Periodicals Directory is a bibliographic database providing comprehensive information about popular and academic magazines, scientific journals, newspapers and other serial publications.

35. OAIster Database
OAIster is a union catalog of millions of records that represent open access resources. This catalog was built through harvesting from open access collections worldwide using the Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH).

36. Beilstein Database
Beilstein database is the largest database in the field of organic chemistry. The database covers the scientific literature and contains experimentally validated information on millions of chemical reactions and substances from original scientific publications.

37. Mendeley
Mendeley is a free reference manager and academic social network site that enables you organize your research, collaborate with others, and follow the latest research.

38. Chinese Social Science Citation Index
Chinese Social Sciences Citation Index (CSSCI) is an interdisciplinary citation index program in China. This citation database covers more than 500 Chinese academic journals of humanities and social sciences. Many Chinese universities and institutes use CSSCI as a basis for the evaluation of academic achievements and promotion.

39. Library of Congress
The Library of Congress is the research library that serves the United States Congress. You can use its online catalog to search the library’s collections by keyword or browse materials by subject, title, author & more.

40. CiNii Articles
CiNii is a bibliographic database online service for material in Japanese academic libraries, especially focusing on Japanese works and English works published in Japan. The database contains more than 15 million articles from more than 3600 publications.

41. PsycINFO
PsycINFO is a database of abstracts of literature in the field of psychology. It contains citations and summaries from the 19th century to the present of journal articles, book chapters, books, and dissertations.

42. Tisch Library – Journals and Articles
With Tisch Library you can search a wide variety of books, journals and articles, film, music, images and other unique collections.

43. OpenEdition.org
OpenEdition.org brings together four platforms dedicated to electronic resources in the humanities and social sciences.

44. Digital Library Of The Commons Repository (DLC)
The DLC provides free and open access to full-text articles, papers, and dissertations. This site contains an author-submission portal, image database and the comprehensive bibliography of the commons.

45. Arts & Humanities Citation Index
The Arts & Humanities Citation Index is a citation index, with abstracting and indexing for more than 1,700 arts and humanities journals, and coverage of disciplines that includes social and natural science journals. Its subjects cover arts, humanities, language, poetry, music, classical works, history, philosophy, architecture, religion, and many more.

46. Science Citation Index
Science Citation Index covers more than 8,500 notable and significant journals, across 150 disciplines, from 1900 to the present.

47. Circumpolar Health Bibliographic Database (CHBD)
CHBD contains more than 8000 of records describing publications about all aspects of human health in the circumpolar region. The database is a project of the Canadian Institutes of Health Research (CIHR) Team in Circumpolar Health Research.

48. CERN Document Server (CDS)
The CERN Document Server is the institutional repository that provides acquisition, search and collaborative tools to manage collections of documents produced at CERN. This includes HEP documents, multimedia documents, bulletins, administrative documents, EU project documents and many more.

49. Open Library
Open Library is an open, editable library catalog, building towards a web page for every book ever published. It contains over 20 million records from a variety of large catalogs as well as single contributions.

50. Ei Compendex
Ei Compendex is an engineering literature database that provides a holistic and global view of peer reviewed and indexed publications with over 20 million records from 77 countries across 190 engineering disciplines.

51. Embase
Embase improves your biomedical research with its comprehensive biomedical literature database.

52. IEEE Xplore
EEE Xplore is a online database for access to journal articles, conference proceedings, technical standards on computer science, electrical engineering and electronics, etc.

53. Social Science Research Network (SSRN)
SSRN is a website devoted to the rapid dissemination of scholarly research in the social sciences and humanities. It provides over 800k research papers from 386,975 researchers across 30 disciplines.

54. The World Factbook – CIA
The World Factbook offers information on the people, history, government, economy, geography, communications, transportation, military, and transnational issues for 267 world entities. It provides maps of the major world regions, flags of the World, political maps of the World, world oceans map as well as standard time zones of the world map.

55. Europe PMC
Europe PMC is an archive of life sciences journal literature. It offers free access to a large and growing collection of biomedical research literature.

56. National Diet Library
The National Diet Library (NDL) is the national library of Japan and among the largest libraries in the world.

57. DBLP Computer Science Bibliography
DBLP is a computer science bibliography website. It lists more than 3.66 million journal articles, conference papers, and other publications on computer science.

58. National Archives Catalog
With National Archives Catalog you can search historic documents, research, government information, and many more in a single search.

59. University of Guelph Library
University of Guelph Library is a comprehensive public research university in Guelph, Ontario, Canada. Its online portal lets you search hundreds of millions of online full-text journal articles, books, news articles, items in the Library’s catalogue and more.

60. Chemical Abstracts Service (CAS)
CAS is an online source of chemical information that provides many tools such as SciFinder and tagged keywords, summaries, indexes of disclosures and structures of compounds in recently published scientific documents. CAS has over 8,000 journals, technical reports, dissertations, conference proceedings available in different languages.

61. Scientific Information Database (SID)
SID provides services both in Persian and English sections such as indexing the latest research-scientific journals of Iran, journal citation reports, indexing the abstracts of Iranian Papers published in International journals, online submission, setting of conferences and workshops.

62. CORE
CORE aggregates and offers access to millions of open access research papers, enrich the collected data for text-mining and provide unique services to the research community.

63. Research Papers in Economics (RePEc)
RePEc is a collaborative effort of hundreds of volunteers to enhance the dissemination of research in economics and related sciences. The heart of the project is a decentralized bibliographic database of working papers, journal articles, books, books chapters and software components, all maintained by volunteers.

64. Book Review Index Online
Book Review Index Online is a comprehensive source for book reviews and covers review published in nearly 500 periodicals and newspapers.

65. IngentaConnect
IngentaConnect provides online articles from over 30000 publications. Abstracts are free; full text is available by subscription or pay-per-view. The site is ideal for publishers looking to put their content online for the first time and increase the global visibility of their publications.

66. ASCE Library
ASCE Library is an online civil engineering database that provides the contents of peer-reviewed journals, proceedings, e-books, and standards published by the American Society of Civil Engineers. It offers free access to abstracts of academic journal articles, proceedings papers, e-books, standards, etc.

67. National Bureau of Economic Research (NBER)
NBER is a research organization committed to undertaking and disseminating unbiased economic research among public policymakers, business professionals, and the academic community.

68. Inspec
Inspec is another online resource that provides over 17 million abstracts and specialised indexing to quality research literature in physics and engineering.

69. INSPIRE-HEP
INSPIRE-HEP is an open access digital library for the field of high energy physics. In addition to scientific papers, It provides other information like citation metrics, plots extracted from papers or internal experiment notes and tools for users to improve metadata.

70. MathSciNet Mathematical Reviews
MathSciNet is a fully searchable database with many tools designed to help navigate the mathematical sciences literature. It serves researchers and scholars in the mathematical sciences by providing peer-reviewed articles and books.

71. African Journals Online (AJOL)
AJOL is the world’s largest online library of peer-reviewed, African-published scholarly journals. With AJOL, you can browse peer-reviewed journals from Africa and download full text articles. Articles can be searched by title, authors or keywords.

72. Directory of Open Access Journals (DOAJ)
DOAJ is a community-curated online directory that indexes and provides access to high quality, open access, peer-reviewed journals.

73. JournalTOCs
JournalTOCs is a large and free collection of scholarly journal Tables of Contents (TOCs). The site is for researchers, students, librarians and anyone looking for the latest scholarly articles.

74. AcademicJournals.org
AcademicJournals.org is a broad-based open access publisher. It provides free access to research information to the international community without financial, legal or technical barriers. All the journals from this organization will be freely distributed and available from multiple websites.

75. Questia
Questia is an online research library that lets you access to books, journals, articles, and encyclopedias as well as citation tools. You can search over 6 million of books and articles.

76. PhilPapers.org
PhilPapers.org is a comprehensive index and bibliography of philosophy maintained by the community of philosophers. It’s an online source of research content in philosophy, including journals, books, open access archives, and personal pages maintained by academics.

77. SciELO.org
SciELO is a bibliographic database that contains 985 scientific journals from different countries in free and universal access, full-text format.

78. EBSCO Information Services
EBSCO is another provider of research databases, e-journals, magazine subscriptions, ebooks and discovery service for academic libraries, public libraries, law, corporate, and government markets.

79. Econlit
EconLit offers myriad of economics publications including peer-reviewed journal articles, working papers from leading universities, dissertations, books, collective volume articles, conference proceedings, and book reviews.

80. State Legislative Websites Directory
This online database contains information gleaned from the websites of the 50 state legislatures, the District of Columbia and the territories. You can select to view specific website content materials such as, bills, press rooms, statutes from any states.

81. Information Bridge: Department of Energy Scientific and Technical Information
The Information Bridge provides free public access to over 298,000 full-text electronic documents of Department of Energy (DOE) research report literature. Documents are primarily from 1991 forward and were produced by DOE.

82. BioOne Complete
BioOne Complete is a full-text database of more than 200 leading journals in the biological, ecological, and environmental sciences.

83. Civil Engineering Database
CEDB is a free bibliographic database for all ASCE publications including journals, conference proceedings, books, standards, manuals, magazines, and newspapers on all the disciplines of civil engineering. The coverage dates back to 1872.

84. LessonPlanet
Lesson Planet contains over 400,000 teacher-reviewed classroom resources including lesson plans, worksheets, educational videos, and education articles.

85. CiteULike
CiteULike is a free online service that allows users to save and share citations to academic papers. Based on the principle of social bookmarking, the site works to promote and to develop the sharing of scientific references amongst researchers.

86. Science.gov
Science.gov searches over 60 databases and over 2,200 scientific websites to provide users with access to more than 200 million pages of authoritative federal science information including research and development results.

87. Cochrane Library
The Cochrane Library is a collection of databases that contain different types of high-quality, independent evidence to inform healthcare decision-making.

88. CAB Abstracts – CABI
CAB Abstracts is an English-language bibliographic information online service that provides access to the world’s applied life sciences literature. It comes with CABI Full Text, giving users automatic access to over 410,000 journal articles, conference papers and reports.

89. Zenodo
Zenodo is a research data repository. It provides a place for researchers to deposit datasets allowing researchers in any subject area to upload files up to 50 GB.

90. Archives Hub
Archives Hub you can search across descriptions of archives, including links to digital content, held at over 300 institutions across the UK.

91. Highbeam
HighBeam Research is a paid search engine and full text online archive where you can search for thousands of newspapers, magazines, academic journals, newswires, trade magazines, and encyclopedias.

92. Bioline Internationl
Bioline International is a scholarly publishing cooperative that provides open access to quality research journals published in developing countries. It is managed by scientists and librarians.

93. WorldWideScience
WorldWideScience.org is a global science gateway comprised of national and international scientific databases and portals. The site provides real-time searching and translation of globally-dispersed multilingual scientific literature.

94. Dimensions.ai
Dimensions.ai Extensive research database including publications, grants, patents, and clinical trials. Dimensions is a collaborative project of six Digital Science portfolio companies.

95. Ethnologue
Ethnologue is an annual reference publication in print and online that provides statistics and other information on the living languages of the world. It contains information on over 7000 languages including the number of speakers, locations, dialects, linguistic affiliations, autonyms, etc.

96. Popline.org
Popline.org provides access to 380,000 carefully selected publications and resources related to family planning and reproductive health.

97. Zentralblatt MATH
Zentralblatt MATH is a major international reviewing service providing reviews and abstracts for articles in pure and applied mathematics.

98. Paperity.org
Paperity is a multidisciplinary aggregator of open access journals and papers. It includes more than 1.5 million articles from 4,200 journals, covering all academic disciplines including mathematical sciences, life sciences, medicine, social sciences, humanities and arts.

99. EconBiz
EconBiz is a free search portal for economics and business studies that let you find literature, free full texts and events.

100. RefSeek – Academic Search Engine
RefSeek is another academic search engine for students and researchers. It provides relevant academic search results from web pages, books, encyclopaedias, and journals.

101. Bielefeld Academic Search Engine (BASE)
BASE is one of the world’s most voluminous search engines especially for academic web resources. BASE provides more than 120 million documents from more than 6,000 sources. You can access the full texts of about 60% of the indexed documents for free.

102. JournalSeek
JournalSeek is a large online database covering academic journals. It includes journals published by over 5400 publishers. The categorized database includes journal descriptions and links to the journal’s homepages.

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