Online Publishers
The largest freely accessible collections of online scientific literature currently reside in publisher databases. The “Good” thing about this is that the abstracts for these documents are readily available at no cost … other than your time. The “Bad” thing about this is that only a relatively small number of the full text documents are available … at no cost. The cost of obtaining full text documents is typically $25 - $30 USD per document, unless you are an individual subscriber, or unless you have access to a institutional subscriber account.
Happily, the majority of relevant and useful information is often presented in the document’s abstract.
CSIRO Publishing
An independent business unit of Australia's Commonwealth and Scientific
Research Organization.
Elsevier
Parent company of ScienceDirect.
HighWire Press -
Directory Listing
Stanford University
Free Full-Text document source for many Online Journals ... after a
post-publishing period of time.
Oxford Journals
Oxford University Press.
SpringerLink
International Interface.