Aggregator platforms :

OVID : http://www.ovid.com/webapp/wcs/stores/servlet/content_landing_Books_13051_-1_13151

Both subscription model and perpetual access models available


Myilibrary : http://www.myilibrary.com/

One time purchase – perpetual access model available


StatRef : http://www.statref.com/

Subscription base model only

http://www.nurkowaniehurghada.pl


Publisher based platforms :

Access titles from McGrawhill : http://www.mhprofessional.com/templates/medical.php

Subscription based model

www.tanweir.net


Clinical Key : https://www.clinicalkey.com/

Subscription based model – replacing MDConsult in 2014


Karger Medical E-books : http://www.karger.com/Book/BookNews

Subscription and perpetual access models


MDConsult e-books : http://www.mdconsult.com/

Subscription based model and a perpetual access model – being replaced by Clinical Key in 2014


Oncology Nursing Society : http://www.ons.org/ : http://ons.metapress.com/books -- One time purchase/perpetual access model


ScienceDirect library of e-books : http://www.sciencedirect.com/ -- one time purchase model


Thieme E-book library : http://ebooks.thieme.com/bookshelf --- Subscription based model


Wiley/Blackwell Library of E-Books : http://onlinelibrary.wiley.com/browse/publications?type=book&activeLetter= One time purchase model