• Google Scholar
• Genamics JournalSeek
• Academic Keys
• ResearchBible
• The Global Impact Factor (GIF)
• International Society of Universal Research in Sciences
• China National Knowledge Infrastructure (CNKI)
• CiteFactor
• Open Academic Journals Index (OAJI)
• Directory of Research Journal Indexing (DRJI)
• Scientific Journal Impact Factor
• Jour Informatics
• International Committee of Medical Journal Editors (ICMJE)
• CiteSeerx
• Geneva Foundation for Medical Education and Research
• Secret Search Engine Labs

View More »

• Aquaculture & Veterinary Science
• Chemistry & Chemical Sciences
• Clinical Sciences
• Engineering
• General Science
• Genetics & Molecular Biology
• Health Care & Nursing
• Immunology & Microbiology
• Materials Science
• Mathematics & Physics
• Medical Sciences
• Neurology & Psychiatry
• Oncology & Cancer Science
• Pharmaceutical Sciences