There are many Clinical Practice Guidelines (CPGs) produced by organizations other than the APPT. In order to assist APPT members with determining the trustworthiness of available guidelines, the following links to resources are provided.
AGREE II is a risk of bias checklist that has strong reliability and validity for appraising the quality of a CPG. The tool and training resources are freely available here.
In 2011, the Institute of Medicine, now the National Academy of Medicine, set the standards for trustworthy clinical practice guidelines. Their seminal document can be found here.
There are many repositories for CPGs managed by organizations and governments. There is no single repository with all guidelines, and not all guidelines are searchable in journals, as many are developed as monographs. PTs looking for CPGs on a particular condition or topic will need to search widely.