A-Z open access databases
- DireOpen J-gate - Largest Open Access English Language JournalsPortal.
- J-STAGE1642 titles
- Open Science Directory - 13000 Open Access titles
- Directory of Open Access Journals over 8030 titles
- Directory of Free Full- Text Journals in Chemistry
- Free Medical Journals - 3223 titles
- Socolar- 11739 Journals open access journals
- High Wire Press - 2,325,142 free full-text articles from 278 archives of free journal back issues
- Global Health Delivery Online
- Worldwide Science - the global science gateway
- University of Virginia - All areas of science and engineering
- PubMed Central (PMC) - 4.1 Million Articles
- Open Access Journals Search Engine (OAJSE) - Journals in the World (excluding India)
- Scholarly Open Access
- SpringOpen - 200 Titles
- sciencedirect - 599 Titles
- JURN - Millions of free academic articles, chapters and theses
- Oxford University Press: Oxford Open
- National Academy of Sciences: PNAS Open Access Option