Colecções de eBooks em acesso livre:

Acta Portuguesa de Nutrição –http://actaportuguesadenutricao.pt/

Biblioteca Digital Mundial (World Digital Library) – http://www.wdl.org/pt/

Bookboon.com – http://bookboon.com/en/environmental-engineering-ebooks

Bookshelf – http://www.ncbi.nlm.nih.gov/books/

E-Books Directory – http://www.e-booksdirectory.com/

FreeBookCentre.net – http://www.freebookcentre.net/Biology/Biology-Books-Online.html

FreeBooks4Doctors – http://www.freebooks4doctors.com/

Free-eBooks.net – http://www.free-ebooks.net/

Free Medical Books – http://www.e-booksdirectory.com/medical.php

FreeScience – http://www.freescience.info/Medicine.php

MedicalStudent.com – http://www.medicalstudent.com/