- Astrophysics Data System (ADS)
- Baidu Scholar
- Chemical Abstracts Service (CAS) - CAplus
- Chemical Abstracts Service (CAS) - SciFinder
- CNKI Scholar (China National Knowledge Infrastructure)
- Current Geographical Publications
- Dimensions
- DOAJ (Directory of Open Access Journals)
- EBSCO
- Ei Compendex
- Elsevier - Reaxys
- ExLibris
- Geobase
- GeoRef
- Google Scholar
- Japan Science and Technology Agency (JST)
- J-Gate
- JournalTOCs
- KESLI-NDSL (Korean National Discovery for Science Leaders)
- MyScienceWork
- Naver Academic
- Naviga (Softweco)
- Paperbase
- Polymer Library
- ReadCube
- Referativnyi Zhurnal (VINITI)
- ScienceON/AccessON
- SCILIT
- SCImago (SJR)
- Scite_
- SCOPUS
- Semantic Scholar
- Sherpa/RoMEO
- TDNet
- Ulrich's Periodicals Directory/ulrichsweb
- WanFang Data
- Web of Science - Emerging Sources Citation Index
- WorldCat (OCLC)
- X-MOL
