Rebuilding tech in Afghanistan with open source
They use this software,
https://www.univention.com/
Which to a layman like me seems pretty neat and decently priced. As I have never used it I can not say how it performs personally.
I like this explanation they give about their interaction with Debian.
ZiiK one of the organisations helping out the Afgans in a big way are German and have been helping and promoting open source to underdeveloped countries since 2000.