Who knows a free CMS like Antitraining?

Question

CMS

Hello everyone, who knows a CMS for online training like antitrainingi.ru ?
The functionality is approximately the following:
- a list of students
- a list of lessons (can be divided into modules / categories)
- checking DZ and the ability to send TK to students for checking teacher.

Answer 1

"Antitrainings" now has everything you described and much more. And a free plan for 1 year. You can try. Mobile version, easy to set up platform. For updates and current rates, please click here https://antitrainingi.ru.

Answer 2

There are no ready ones. This is done individually.

Answer 3

It seems to me that they have MODX there and some kind of custom or default plugin. Or maybe completely self-written. I don't know MODX at all.