Soil data and information
- FAO Problem Soils Database
- ISRIC World Soil Information - data sets
- ISRIC World Soil Information - library
- On-line soil survey information (by David Rossiter)
- Earth's Critical Zone Exploratory Network (CZEN)
- European Soil Bureau
- USA soil information
- Digital soil mapping website
- GlobalSoilMap.net
- Soil maps of the world
- Photolibrary on soil erosion processes
- Soil mineralogy
- Open directory - Soils
- World Soil Surveys Archive and Catalogue
- Soil database of Central and Eastern Europe