Darley Studs
- Australia (three studs), France (three), Ireland, Japan (two), New Zealand (two), United Kingdom (four) and United States (three). Includes in-depth stallion information with downloadable catalogue page pedigrees, up-to-date race results by Darley sired p
- http://www.darley.co.uk

Stud-Farms.com Homepage
- World-wide directory of Thoroughbred stud farms.
- http://www.stud-farms.com

Coolmore Studs
- International breeding organization standing a wide range of stallions in Kentucky (USA), Co. Tipperary (Ireland) and Australia. Comprehensive details of all stallions and the studs.
- http://www.coolmore.com

Juddmonte Farms
- With farms in the UK, Ireland and the U.S.A. Site includes on-line forms for breeding and booking, stallion photos and information, contacts. Newmarket, England, and Lexington, KY.
- http://www.juddmonte.com

Vinery Farm
- International breeding operation, with more than 20 stallions, including leading sires Red Ransom, Gilded Time, and multiple classic winner, Real Quiet standing in Kentucky, USA and Scone in Australia. Includes news and developments along with online com
- http://www.vinerykentucky.com/