Sommerfeltia is covered by the following services:
- AGRICOLA (National Agricultural Library)
- Baidu Scholar
- CABI (over 50 subsections)
- CNKI Scholar (China National Knowledge Infrastructure)
- Dimensions
- EBSCO
- ExLibris
- Google Scholar
- Japan Science and Technology Agency (JST)
- J-Gate
- JournalTOCs
- MyScienceWork
- Naver Academic
- Naviga (Softweco)
- ProQuest
- ReadCube
- ScienceON/AccessON
- SCILIT
- Scite_
- Semantic Scholar
- Sherpa/RoMEO
- TDNet
- Ulrich's Periodicals Directory/ulrichsweb
- WanFang Data
- WorldCat (OCLC)
- X-MOL
Additionally, the journal is registered and indexed in the Crossref database.