The following are inventories that can be used to help you discover a little more about yourself.

Keirsey The Keirsey Temperament Sorter II
An adaptation of the Jung, Myers-Briggs, 16-type personality model.
Big5 The Big Five
Used in academic research.
Color Code The Color Code
Relational personality.
5 Love Languages The 5 Love Languages
Discover your love language
Holland's Code Holland’s Code (RIASEC)
Career personality.
MI Multiple Intelligences
Find your strengths
Emotional Intelligence Quotient
How do you perceive and regulate your emotions?
Micro Expressions Training
Lie to me
Oxford Happiness Questionnaire
The Guardian