65 Best Websites For Research Paper Sources

Research papers are one of the most widely spread academic assignments. Students have to prepare a lot of term papers, research papers and other academic papers on different disciplines during their study.

It is hard to overestimate the importance of proper research when working on a particular topic. Research is equally vital for any discipline and any type of work.

If you are trying to choose the best research paper writing service, this review of top 20 research paper writing services will distinctively help you with this challenging mission.

Here are 65 best websites for your research papers - academic search engines, scholarly journals and directories you can use to your advantage for free.

1. African Journals OnLine is the world's largest online library of peer-reviewed, African-published scholarly journals. AJOL hosts 521 journals, including 245 open access journals. There are 151 163 full text articles for download, of which 93 759 are open access.
2. American Association for Cancer Research - the journals of the AACR cover the entire spectrum of cancer research from molecules to medicine, from proteomics to prevention. Select the journal that is most appropriate for your manuscript and follow the instructions to access the correct submission system.
3. American Journal of Neuroradiology (AJNR) publishes more than 350 fully reviewed original research papers, review articles, clinical reports, and brief/technical notes in a typical year. Subject matter covers the spectrum of diagnostic and functional imaging of the brain, head, neck, spine, and organs of special sense.
4. American Psychological Association a collection of recently published articles from subdisciplines of psychology covered by more than 90 APA journals.
5. Annals of Family Medicine is dedicated to advancing knowledge essential to understanding and improving health and primary care. The Annals supports a learning community of those who generate and use information about health and generalist health care.
6. arXiv.org provides open access to over a million e-prints in the fields of physics, mathematics, computer science, quantitative biology, quantitative finance and statistics.
7. Bielefeld Academic Search Engine (BASE) is one of the world's most voluminous search engines especially for academic web resources. BASE provides more than 100 million documents from more than 5000 sources. You can access the full texts of about 60% of the indexed documents for free.
8. Bloomsbury Collections delivers instant access to quality research and provides libraries with a flexible way to build eBook collections across the humanities and social sciences. It contains over 5,400 titles, featuring content from Bloomsbury's latest research publications. For researchers available search full text of titles, filter by date, series or subject.
9. Bone & Joint Research (BJR) the gold open access journal for the musculoskeletal sciences. BJR is a gold open access journal which means that all articles published will be available online, to anyone, anywhere in the world, completely free of charge.
10. Breathe is the clinical educational publication from the European Respiratory Society. It is published quarterly and is free to access for all in order to bring high-quality educational material to a wide audience.
11. British Journal of General Practice (BJGP) is an international journal publishing research, debate and analysis, and clinical guidance for family practitioners and primary care researchers worldwide. The journal is sent to over 50,000 clinicians and researchers each month.
12. British Library is the national library of the United Kingdom and one of the world’s greatest libraries. Library hold over 13 million books, 920000 journal and newspaper titles, 57 million patents and 3 million sound recordings.
13. Canadian Family Physician (CFP) a peer-reviewed medical journal, is the official publication of the College of Family Physicians of Canada.
14. Columbia Undergraduate Science Journal (CUSJ) is a peer-reviewed, open-access academic publication. Each CUSJ paper undergoes a peer review process facilitated by the CUSJ Editorial Board and Columbia faculty. Publication in the CUSJ is highly competitive.
15. CORE offer seamless access to millions of open access research papers, enrich the collected data for text-mining and provide unique services to the research community.
16. DBLP: computer science bibliography - this service provides open bibliographic information on major computer science journals and proceedings. Although it provides access to both full-text articles and those behind a paywall, you can search for only full-text articles.
17. Diffusion Fundamentals is an interdisciplinary open-access online journal publishing original research articles in the field of diffusion and transport, energized by a biannual Conference Series. Papers submitted for publication in the online journal are expected to deal with new aspects of diffusion theory, experiment and application. Examples include: theory, experiments, applications, methods and diffusion-like phenomena: studies in other areas such as ecologic, economic and social systems.
18. Directory of Open Access Books covers free, full text, peer reviewed books published under an Open Access license. Books can be searched (simple or advanced search) or browsed by title, subject or publisher.
19. Directory of Open Access Journals is an online directory that indexes and provides access to quality open access, peer-reviewed journals. They cover all subjects and languages. There are over 6000 free, full-text available journals in the directory.
20. Electronic Journal of Science Education is a peer reviewed journal sponsored Southwestern University and Texas Christian University. EJSE publishes manuscripts relating to issues in science education/science teacher education from early childhood through the university level and informal science and environmental education.
21. Elsevier (open access journals) - a list of open access journals published by Elsevier. All articles have undergone peer review and upon acceptance are immediately and permanently free for everyone to read and download.
22. Enoch Pratt Free Library is the free public library system of the City of Baltimore, Maryland. Find articles and documents. Search newspapers, magazines, and online archives. Some databases require a library card.
23. ERIC is an online library of education research and information with more than 1.3 million bibliographic records of articles and online materials, sponsored by the Institute of Education Sciences of the U.S. Department of Education.
24. Food and Agriculture Organization (FAO) is specialized agency of the United Nations that leads international efforts to defeat hunger. It includes publications dealing with food, food security, aquaculture, forestry, agriculture, and rural development. Documents and publications will usually be available full-text in at least one of the FAO's official languages.
25. Free Research Papers Archive is an acadmic journal created by students who wish to publish their research papers to the web. There are thousands of papers to read or reference!
26. FreeFullPDF - pdf search engine for free scientific publications. Download over 80 million free science papers, patents, theses and posters.
27. Google Scholar is a freely accessible web search engine that indexes the full text or metadata of scholarly literature across an array of publishing formats and disciplines. Google Scholar index includes most peer-reviewed online academic journals and books, theses and dissertations, abstracts, preprints, technical reports, conference papers, and other scholarly literature, including court opinions and patents.
28. IDEAS is the largest bibliographic database dedicated to Economics and available freely on the Internet. Based on RePEc, it indexes over 2500000 items of research, including over 2300000 that can be downloaded in full text.
29. International Development Research Centre (IDRC) funds research in developing countries to promote growth, reduce poverty, and drive large-scale positive change. The site has many publications available for free. Topics include: Environment, Development, Evaluation, Food and Agriculture, Economics, Health, Natural resources, Science and Technology, Information and Communication, Social Policy.
30. iSEEK Education is a targeted search engine that compiles hundreds of thousands of authoritative resources from university, government, and established noncommercial providers. It provides time-saving intelligent search and a personal Web-based library to help you locate the most relevant results immediately and find them quickly later.
31. Journal of Biological Engineering (JBE) the official journal of the Institute of Biological Engineering. JBE provides a home for the continuum from biological information science, molecules and cells, product formation, wastes and remediation, and educational advances in curriculum content and pedagogy at the undergraduate and graduate-levels. All articles published by JBE are made freely and permanently accessible online immediately upon publication, without subscription charges or registration barriers.
32. JSTOR is a highly selective digital library of academic content in many formats and disciplines. The collections include top peer-reviewed scholarly journals as well as respected literary journals, academic monographs, research reports from trusted institutes, and primary sources.
33. Lexis Web is your go-to for any law-related inquiries you may have. The results are drawn from legal sites, which can be filtered by criteria such as blog, news, commercial and government. Users can also filter results by jurisdiction, practice area, source and file format.
34. Maejo International Journal of Science and Technology - the international journal for the publication of all preliminary communications in Science and Technology. MIJST is peer-reviewed and published as an online open-access journal.
35. Microsoft Academic is a free public search engine for academic publications and literature, developed by Microsoft Research. Re-launched in 2016, the tool features an entirely new data structure and search engine using semantic search technologies. It currently indexes over 375 million entities, 170 million of which are academic papers.
36. OMICS International has 700 online scholarly open access journals and organizes 1000 international conferences worldwide. OMICS International journals are indexed in the reputed: database like PubMed Central and Scopus. Source are known for a very high impact factor of Life Sciences, medical, chemistry, pharma, omics, environment, engineering and management.
37. OnLine Journal of Biological Sciences is an open access scholarly journal that is available to the reader without financial barrier. OJBS is a peer-reviewed, updated four times a year, bring out articles of high importance in all areas of biological science.
38. Oxford University Press publishes the highest quality journals and delivers this research to the widest possible audience. OUP has the highest percentage of journals in the top 10% by impact factor and the lowest percentage of journals in the bottom 50% among publishers with over 100 journals in ISI Impact Factor ranking.
39. Pacific Journal of Science and Technology (PJST) is a peer-reviewed electronic journal of interdisciplinary scientific research, theories, and observations.
40. Paperity is the central hub where researchers, scholars, students and the general public from around the world can find and read open literature spanning all academic disciplines.
41. Portico - digital preservation service is part of ITHAKA, a not-for-profit organization helping the academic community use digital technologies to preserve the scholarly record and to advance research and teaching in sustainable ways.
42. Public Library of Science (PLOS) is a nonprofit open access science, technology and medicine publisher, innovator and advocacy organization with a library of open access journals and other scientific literature under an open content license.
43. PubMed Central (PMC) is a free full-text archive of biomedical and life sciences journal literature at the U.S. National Institutes of Health's National Library of Medicine.
44. RBM a journal of rare books, manuscripts, and cultural heritage is the Association of College and Research Libraries' journal covering issues pertaining to special collections libraries and cultural heritage institutions.
45. RefSeek is a web search engine for students and researchers that aims to make academic information easily accessible to everyone. RefSeek searches more than one billion documents, including web pages, journals, encyclopedias, books and newspapers.
46. Repository of Free Essays and Research Papers - free essay and research paper samples section, with an extensive repository of over 300,000 essays categorised by subject area - no registration required!
47. Reproduction publishes original research articles which focus on the cellular and molecular biology of reproduction. Emerging topics include cloning, the biology of embryonic stem cells, environmental effects on reproductive potential and health and epigenetic effects on reproductive and developmental processes.
48. ResearchGate is a unique social networking site for scientists and researchers. Over 15 million researchers submit their work, which totals 100+ million publications, on the site for anyone to access. You can search by publications, data and authors, or you can even ask the researchers questions.
49. Respiratory Care is the official science journal of the American Association for Respiratory Care (AARC). It is publishes articles pertaining to disorders affecting the cardiorespiratory system, including their diagnostic assessment, manifestations, monitoring, pathogenesis, pathophysiology, prevention, and management.
50. SafetyLit is a bibliographic database and online update of recently published scholarly research of relevance to those interested in the broad field of injury prevention and safety promotion.
51. Science World Journal (SWJ) is a peer review on-line international journal of broad appeal, aimed at fast publication of cutting edge research across the sciences. The Journal publishes multidisciplinary articles reporting on original research in the natural and physical sciences and their applications. The journal also promotes the application of computers in modeling and Bioinformatics.
52. 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.
53. ScienceDirect is Elsevier's leading information solution for researchers. Website provides subscription-based access to a large database of scientific and medical research. It hosts over 12 million pieces of content from 3,500 academic journals and 34,000 e-books. The journals are grouped into four main sections: Physical Sciences and Engineering, Life Sciences, Health Sciences, and Social Sciences and Humanities. Article abstracts are freely available, but access to their full texts generally require a subscription or pay-per-view purchase.
54. ScienceOpen is a freely accessible search and discovery platform that puts research in context. Smart filters, topical collections and input from the academic community help you to find the most relevant articles in your field and beyond.
55. Sexually Transmitted Infections is the world's longest running international journal on sexual health. The journal publishes original research, descriptive epidemiology, evidence-based reviews and comment on the clinical, public health, sociological and laboratory aspects of sexual health from around the world. STI also publish educational articles, letters and other material of interest to readers, along with podcasts and other online material.
56. Social Science Research Network (SSRN) is a collection of papers from scholars in the social sciences community. The site provides 794749 research papers from 373877 researchers across 30 disciplines.
57. Sociology Student Research Projects is a collection of 80+ open access full-text research papers in sociology completed by top and award-winning students from Saint Mary's college. It is a go-to place if you want to find open academic materials for your research paper online.
58. SURP Sample Proposals include 45 research papers in social sciences, engineering, medicine, and other fields. The university offers the ability to download them as a PDF.
59. The Dryad Digital Repository is a curated resource that makes the data underlying scientific publications discoverable, freely reusable, and citable. Dryad provides a general-purpose home for a wide diversity of datatypes.
60. The EMBO Journal publishes papers describing original research of broad general interest in molecular and cell biology - a particular emphasis is placed on molecular mechanism and physiological relevance.
61. The World Factbook (CIA) is an easy way to find valuable arguments for your research papers online. Learn more about history, economy, geography, government, energy, transportation, communications, military, and transnational issues for 267 world entities.
62. 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.
63. Wolfram Alpha is an online service that answers factual queries directly by computing the answer from externally sourced "curated data". Wolfram Alpha is based on Wolfram's earlier flagship product Wolfram Mathematica, a computational platform or toolkit that encompasses computer algebra, symbolic and numerical computation, visualization, and statistics capabilities.
64. WorldCat.org is the world's largest network of library content and services. WorldCat lets you search the collections of libraries in your community and thousands more around the world. It is operated by OCLC Online Computer Library Center, Inc.
65. WorldWideScience.org is a global science gateway comprised of national and international scientific databases and portals. WorldWideScience accelerates scientific discovery and progress by providing one-stop searching of databases from around the world.