CMA Infobase (Site) - Searchable database of Canadian clinical practice guidelines, from the Canadian Medical Association.
Guidelines International Network (Site) - Association of organisations and individuals involved in the systematic development and application of clinical practice guidelines. Features a searchable list of members.
Recommended Clinical Practice Guidelines (Site) - Presented by the Ontario Guidelines Advisory Committee, with details of the recommendation process and a list of publications.
National Guideline Clearinghouse (Site) - The Agency for Healthcare Research and Quality in the United States presents a searchable database of clinical practice guidelines, abstracts, and an annotated bibliography.