There is a homework tool by OpenStax that has auto-graded homework, among other things -- OpenStax Tutor -- it’s for Algebra-based Physics, Introductory Sociolo

There is a homework tool by OpenStax that has auto-graded homework, among other things -- OpenStax Tutor -- it’s for Algebra-based Physics, Introductory Sociology, and Biology courses: https://tutor.openstax.org https://tutor.openstax.org. Also, OpenStax currently has pretty widespread adoption: See http://news.rice.edu/2018/08/01/48-percent-of-colleges-2-2-million-students-using-free-openstax-textbooks-this-year/ http://news.rice.edu/2018/08/01/48-percent-of-colleges-2-2-m... (Disclaimer: I currently work at OpenStax, but am not speaking on behalf of OpenStax)