1. Crossref
2. Open Academic Journal Index
4. Moraref
7. Academia.edu
8. Mendeley
9. Indonesian Scientific Journal Database
10. ISSUU
11. International Institute of Organized Research
13. Journal Factor
14. Infobase Index
15. Eurasian Scientific Journal Index
16. Academic Scientific Journal
17. Scientific Indexing Service
18. Scholaster
21. JIFactor
22. My Science Work