Subject Portals

African Journals OnLine (AJOL)
ArgosBiotech-Science Media
arXiv [Pysics,ComputerScience, Quantitative Biology & Statics]
Australian Family Physician
Bentham Open Access
BIOINFO[Science,Technology & Medicine]
Bioline International
BioMed Central
CLACSO
Computer Science& Programming Books, Textbooks, and Lecture Notes
Cool Toad Open Access Resources
Cornell University Library
Database of University of Cincinnati[Science and Engineering]
Database for Magazine/Journals Articals,etc
Digital Library and Archives[Education, Engineering, literatures, Technollogy,philosophy]
Directory of open acess journals
Donane Institute
Open Access Scholarly Directory
E-Journal of Chemistry
Electronic Journals Library
Electronic Library of Mathematics
Engineering & Science Journals
Free Full Text Journals
Chemistry Journals Free
Free Management Library
Free Medical Journals
Gateway for Free Journals
German Medical Science
Genamics
Geneva Medical Education
Health Library Services
HEC Digital Library
Hindawi Publishers
HighWire Articles
Indian Academy of Sciences
Indian Journals
Indian Medical Journals
Intute Search Engine
IOP Science
J-Stage
JURN
Lebanese American University Journals
Sanskrit Resources
Mathematics Journals
Medical Biotechnology Journals
MedIND
Medknow
MGU Open Access
MDPI
NUMDUM
OAPEN
Open Access LIS Journals
Open Access General
Open Archives Initiative
Openj-gate
PhysNet
Psychology Periodicals
Public Knowledge Project
PLOS
PubMed Central
PubMed UK
Sabinet
Scielo
Electronic Library Mathematics
Trials
UNESCO Social Sciences
Wake Tech Library