C.L.A.U.D.I.O. Personality Test Bot: A chat bot from the A.L.I.C.E. AI Foundation that attempts to determine the user's type by inserting typing questions into a chat conversation.
Eclectic Energies Enneagram Test: Online test which indicates both type and wing. Uses process-of-elimination approach to identify type.
Ennea-Graph: A free online test based on selecting the words that describe you most.
Riso-Hudson Enneagram Test: Independently scientifically validated online Enneagram personality test developed by best-selling Enneagram authors Don Riso and Russ Hudson. The test is also known as the RHETI.
Riso-Hudson Enneagram Type Indicator Sampler: Short version of the RHETI available online for free.
TestCafe's Enneagram Test: Offers an online test with summary results for free, and full results for a fee.
The New Enneagram Test: Free test by Tal Yarkoni. Hosted by 9types.com.
The Triadic Enneagram Test: Also known as The Duniho Enneagram Test.