Tshwane University of Technology is simple the best
University of Johannesburg (about Information Technology and Software engineering).
University of Pretoria
is UNISA
Yes, it is
MANCOSA
Yes, South Africa is the strongest both economically, and has the best technology along with military power.
University of Cape Town
There are different university rankings, but usually the University of Cape Town in South Africa receives the highest ranking of universities in Africa.
University of Pretoria
its located in south africa i think
Your best bet would be the University of the Witwatersrand(WITS University)
The best university in nigeria is today is oau and not maulag while the best university of technology is lautech