eHarmony - Personality matching of couples on 29 dimensions that determine long-term success.
Finding the Love of Your Life - Offers a personality profile as a tool to reveal compatibility, emotional development level and natural preferences for specific personality type. Identifies positive and negative traits. Reveals mismatch and complement levels.
Free online dating and free compatibility test - Free online dating and free Ph.D. developed compatibility test for couples in seven critical areas that predict long term relationship satisfaction.
Jung Marriage Test - Marriage compatibility test based on the famous approach of Jung and Myers-Briggs. Gives a quantitative measure of partners compatibility.
Queendom Compatibility Test - Provides feedback about personality, relationship philosophies, communication styles, and values.