Open Library
Open Library is an open, editable library catalog, building towards a web page for every book ever published. Read, borrow, and discover more than 3M books for free.
Sci-Hub is an academic access platform that provides free PDF downloads of scientific papers and journal articles that are typically locked behind paywalls. Founded with the mission to remove barriers to knowledge, Sci-Hub allows users to search by DOI, title, or URL and instantly retrieve full-text PDFs from thousands of publishers.
It is widely used by researchers, students, and academics in need of literature from journals such as Nature, Elsevier, Springer, Wiley, IEEE, and many more—especially in regions with limited access to institutional subscriptions.
While Sci-Hub has played a key role in democratizing scientific knowledge, it operates outside of most publishers’ licensing agreements and is subject to ongoing legal and ethical debates.
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Internet Archive
The Internet Archive offers over 20,000,000 freely downloadable books and texts. There is also a collection of 2.3 million modern eBooks that may be borrowed by anyone with a free archive.org account.
PDF Drive
PDF Drive - Search and download PDF files for free.
ResearchGate
Access 160+ million publication pages and connect with 25+ million researchers. Join for free and gain visibility by uploading your research.
Manybooks
Great selection of modern and classic books waiting to be discovered. All free and available in most ereader formats.
EPDF.PUB
Write a book, elevate your profile, build a business - Upload ideas and beginner tips to get you started
Academia
Academia.edu is the platform to share, find, and explore 50 Million research papers. Join us to accelerate your research needs & academic interests.
PdfCoffee
You may publish any number of documents in PDF, Microsoft Word and PowerPoint format. All files uploaded to the website are automatically adapted for displaying on iPad, iPhone, Android and other platforms.
