Stauffenberg Bloodstock
- Thoroughbred racehorse farm in Germany offering sales and boarding. [English and German]
- http://www.stauffenberg.com/index.php?lang=en

Hof Iserneichen
- Germany, Isernhagen, breeding farm. Includes in-depth pedigrees of all stock bred, progeny race results and contacts.
- http://www.iserneichen.de/

Aga Khan Studs
- Ireland and France, standing five stallions. Includes comprehensive information on the family's involvement with racing and breeding over the last 75 years, in-depth stallion information, horses for sale, nomination forms, a search facility and contacts.
- http://www.agakhanstuds.com/