- ARIANTA - Science and branch Polish electronic journals
- ASCI - Asian Science Citation Index
- Bielefeld Academic Search Engine
- The Central European Journal of Social Sciences and Humanities (CEJSH)
- Central Medical Library (Poland)
- Crossref
- The Directory of Open Access Journals (DOAJ)
- EBSCO
- Free Medical Journals
- Harvard Libraries - University of California Libraries
- Index Copernicus
- J-Gate
- Main Medical Library in Warszawa
- Ministry of Education and Science
- MOST WIEDZY
- POL-Index
- Research4Life
- Scopus