Atlas of Gastrointestinal Endoscopy
- Endoscopic images of esophagus, stomach, colon, and ERCP from a Otto v.Guericke University in Magdeburg, Germany.
- http://www.endoskopischer-atlas.de/indexe.htm

Pathology of the Liver
- Review of hepatic pathology developed by Loyola University.
- http://www.meddean.luc.edu/lumen/MedEd/orfpath/pathtitl.htm

WebPath: The Internet Pathology Laboratory
- Contains images, text, and tutorials for pathology education for multiple organ systems including the GI system. Lab exercises and tutorials are included.
- http://www-medlib.med.utah.edu/WebPath/webpath.html#MENU

Atlas of Gastrointestinal Endoscopy.
- Collection of endoscopic images annotated with patient descriptions. The site is developed by Atlanta South Gastroenterology, P.C.
- http://www.mindspring.com/~dmmmd/index.html

El Salvador Atlas of Gastrointestinal VideoEndoscopy
- Images and Videos of Gastrointestinal Video Endoscopy from the Jerusalem Medical Center in San Salvador, El Salvador.
- http://www.gastrointestinalatlas.com