مكتبات عالمية
| Lib Name | Link |
| DBLP | https://dblp.org/ |
| SSRN | https://www.ssrn.com/index.cfm/en/ |
| PubMed | https://pubmed.ncbi.nlm.nih.gov/ |
| Semantic Scholar | |
| Library Genesis | https://libgen.is/ |
| The Online Books Page | http://onlinebooks.library.upenn.edu/webbin/book |
| The free physics textbook | http://www.motionmountain.net/text.html |
| University of Virginia Library | http://etext.lib.virginia.edu/ebooks/ |
| University of Texas Libraries | http://www.lib.utexas.edu/books/etext.html |
| The eBook Directory | http://www.ebookdirectory.com/ |
| The British Library | http://www.bl.uk/ |
| Bookzz | http://ww7.bookzz.org/ |
| libgen | LIBGEN.ME |
| ieee access | https://ieeexplore-ieee-org.ezplib.ukm.my/Xplore/home.jsp |
| lGLibrary | http://portal.igpublish.com.ezplib.ukm.my/iglibrary/ |
| proquest | https://www-proquest-com.ezplib.ukm.my/index?accountid=27931 |