Sci-Hub alternative websites for accessing academic papers for free:
Unpaywall (https://unpaywall.org/)
Browser extension for Chrome.
Allows legal, free access to research papers directly on journal websites.
Open Access Button (OAB) (https://openaccessbutton.org/)
Copy and paste a paper’s link or DOI into the OAB website.
Provides legal access to the paper on the subsequent page.
PaperPanda (https://paperpanda.app/)
Chrome extension similar to Unpaywall.
Enables one-click access to millions of research papers.
DOAJ (Directory of Open Access Journals) (https://doaj.org/)
Offers free access to millions of scientific papers globally.
Focuses on open-access journals.
OA.mg (https://oa.mg/)
Search engine designed specifically for academic papers.
Provides access to over 250 million papers.
Core (https://core.ac.uk/)
World’s largest database of research papers.
Contains over 298 million papers available for free.
arXiv (https://arxiv.org/)
Specializes in natural sciences and economics.
Offers free access to 2.4 million academic papers.
Tip: Remove any spaces in the URLs if there are issues accessing the websites.
https://scholar.archive.org/