CMA Infobase: Searchable database of Canadian clinical practice guidelines, from the Canadian Medical Association.
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.
IOF - Evidence-based Guidelines for the Prevention of Osteoporosis-related Fractures: Guidelines collection on osteoporosis fracture reduction, compiled by the International Osteoporosis Foundation.
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.
Recommended Clinical Practice Guidelines: Presented by the Ontario Guidelines Advisory Committee, with details of the recommendation process and a list of publications.