Free Specialty Scientific Libraries

National Academy of Sciences
http://www.nasonline.org/

National Academies
http://www.nas.edu/

Pontifical Academy of Sciences (FREE)
http://www.casinapioiv.va/content/accademia.html

Pontifical Academy of Social Sciences (FREE)

http://www.pass.va/content/scienzesociali.html

Austrian Academy of Sciences

http://www.oeaw.ac.at/en/austrian-academy-of-sciences/

World Academy of Science, Engineering and Technology

https://www.waset.org/

African Journals Online

http://www.ajol.info/index.php/index/

Royal Society

https://royalsociety.org/

Science

http://www.sciencemag.org/

Nature Publishing Group

http://www.nature.com/

Directory of Open Access Journals
http://doaj.org/

RefSeek - Academic Search Engine of Free Articles
www.refseek.com

Pakistan Academy of Sciences
http://www.paspk.org/Proceedings.php

Indian Academy of Sciences
http://www.ias.ac.in/

Chinese Academy of Sciences
http://english.cas.cn/

Japan Academy
http://www.japan-acad.go.jp/en/

Royal Society of Canada (Expert Panel Reports)
http://www.rsc.ca/expert-panels/rsc-reports