Halal

Muslim Consumer Group - A non-profit and non-political organization incorporated as an educational organization for Muslims about Halal food, and to provide Halal certification of food products in the US.
http://www.muslimconsumergroup.com/

Halal and Healthy - A collection of articles on halal and healthy eating in Islam, explaining the concept; also includes listings of acceptable ingredients, and discussion of related issues.
http://www.soundvision.com/info/halalhealthy/

Halaal - An article on Wikipedia on the Arabic term for "permissible".
http://en.wikipedia.org/wiki/Halal

Zabihah.com - International listings of Halal restaurants, groceries and stores.
http://www.zabihah.com/

Halal Foodways - A professional chef's perspective on providing halal options acceptable to Muslim guests.
http://www.unichef.com/halalfood.htm

Islamic Food and Nutrition Council of America - Islamic council promoting Halal food in the west.
http://www.ifanca.org/

Halal Monitoring Committee - Aims to regulate and inspect Halal products from the source to the consumer. Information about their certification scheme to combat dubious or false product labelling. [UK]
http://www.halalmc.co.uk/