1. CAS American Chemical Society

3. ROAD

3. AcademicKeys

4. Google Schoar

5. Advanced Science Index

6. African Quality Centre For Journals

7. BIOJ

8. CFPLIST

9. Contemporary Research Index

10. COSMOS Impact Factor

11. Index Copernicus

12. Current Index to Scholarly Journals

13. Digital Journals Database

14. Directory of Abstract Indexing for Journals

15. Directory of Academic Resources

16. Directory of Indexing and Impact Factor

17. Electronic Journals Library

18. Elite Scientific Journal Archive

19. Eurasian Scientific Journal Index

20. General Impact Factor

21. Global Impact Factor

22. GSCIF

23. IIFS

24. IIJIF

25. Ijindex

26. IJI-Thomsonreuters

27. Infobase Index

28. International Institute of Organized Research

29. ISIFI

30. J-Gate

31. Jour Informatics

32. Journals Directory

33. Journalseeker

34. Journaltocs

35. Journal Factor

36. Oajournals

37. Open Academic Journal Index

38. Quality Factor

39. Recent Science Index

40. ResearchBib

41. Scholar Impact

42. Scholarly Journals Index

43. Scholarsteer

44. Science Impact Factor

45. Science Library Index

46. Scientific Publication Index

47. Scientific Resources Database

48. Scientific World Index

49. Scipio

50. Sindexs

51. SIS

52. SJIF

53. Sjournal Index

54. Universal Impact Factor

55. World Catalogue of Scientific Journals

56. Central and Eastern European Online Library

57. EconBiz

58. International Institute for Research Impact Factor Journals