CTAT Cognitive Tutor Authoring Tool https://github.com/CMUCTAT/CTAT/wiki
and its related LMSes Tutor Shop https://tutorshop.web.cmu.edu/
Open Learning Initiative https://oli.cmu.edu/teach-with-oli/
Datashop (linked to CTAT) https://pslcdatashop.web.cmu.edu/
(Have accts to above - check from google doc)
European I Tutor http://intelligent-tutor.eu/learn-more/