Educational Testing Service
ETS develops, administers and scores more than 50 million tests annually in more than 180 countries, at 9,000+ locations worldwide.
Educational Testing Service Test Collection Database
An extensive library of 20,000 tests and other measurement devices from the early 1900's to the present. Tests are from a variety of U.S. publishers and individual test authors, plus some from Canada, Great Britain and Australia.
American Psychological Association
Information on published unpublished psychological tests and measures. Includes FAQ page with information about where to find particular tests.