Jungian Typology

Myers–Briggs Type Indicator
Myers–Briggs Type Indicator is a questionnaire indicating differing psychological preferences in how people perceive the world and make decisions. There's many tests on the web you can take to find out your MBTI type:
 * IdrLabs - Jung Type,
 * IdrLabs - Cognitive Functions (also based on Jung),
 * 16Personalities (less accurate than the previous ones)