An analogue of the NetSupport School program?

Question

IT education

There is such a program that is very convenient for teaching in a computer class at school.
Tell me, maybe one of you knows the analogues of this program, preferably free.
I heard about similar programs analogs (get-school lite is spinning in my thoughts, but not google).
Thanks
ps finding something may not be a problem, important feedback from those who used it

Answer 1

italc.sourceforge.net

Answer 2

www.netop.com/classroom-management-software.htm

Answer 3

www.radixint.com