CMA Infobase
Searchable database of Canadian clinical practice guidelines, from the Canadian Medical Association.
http://mdm.ca/cpgsnew/cpgs/index.asp
Guidelines International Network
Association of organisations and individuals involved in the systematic development and application of clinical practice guidelines. Features a searchable list of members.
http://www.g-i-n.net/
National Guideline Clearinghouse
The Agency for Healthcare Research and Quality in the United States presents a searchable database of clinical practice guidelines, abstracts, and an annotated bibliography.
http://www.guideline.gov/
Recommended Clinical Practice Guidelines
Presented by the Ontario Guidelines Advisory Committee, with details of the recommendation process and a list of publications.
http://www.gacguidelines.ca/