This website includes freely available tests as well as a searchable catalogs for test publishers like Buros and ETS. However, the information is only updated up to 2005.
A list of instruments for measuring industrial or organizational psychology that are freely available for educational or research use. Maintained by Paul Spector of the University of South Florida.
This site is created and managed by John M. Grohol, Psy.D, an expert in online psychology and behavior. He is also a blogger for the Huffington Post. The tests and quizzes here are free and may lead to ideas, concepts, or other measures researchers may wish to pursue and investigate.