OU Kosher Certification and Information
- Kosher certification program in North America. General Kashrut information with specific product information.
- http://www.oukosher.org

Va'ad HaKashruth of Delaware
- Provides names and supervisory authority for sources approved for kosher provisions by the Va'ad HaKashruth of Delaware, under Rabbi Sanford Dresin, Rav HaMakshir
- http://jewishdelaware.esmartweb.com/Vaad.htm

Kof K Kosher Supervision
- Articles on issues relating to the kosher food industry. Also includes links to agencies.
- http://www.kof-k.org/

Kosher Overseers Associates of America
- Providing Kosher certification and information in America. A division of The Orthodox Rabbinical Association.
- http://www.kosher.org

Star K Kosher Certification
- A worldwide agency. Includes lists of certified products, restaurants, and a Kosher primer.
- http://www.star-k.org/

Organized Kashrus Laboratories
- A kosher supervision agency.
- http://www.ok.org/

American Asian Kashrus Services
- Kosher certification agency with information about kashrut and kosher Asian recipes.
- http://www.kashrus.org/

Triangle K Kosher Certification and Supervision
- Kosher food supervision and certification of manufacturers, products and plants around the world. Kosher primer and on-line product query featured.
- http://www.trianglek.org/