In another rare twist, the male couple share biological fatherhood as DNA from both men was used.
The new parents, who were friends and neighbours of former Paralympian Oscar Pistorius, met their surrogate only because of the athlete's murder trial.
The couple, Christo and Theo Menelaou, have now taken their triplets back home to Pretoria after a nerve-wracking three weeks in hospital, where the babies hovered between life and death.
They were delivered prematurely at just over 31 weeks on 2 July.
Joshua was the first triplet born by caesarean and was the heaviest, weighing 1.82kgs (4lbs), Zoe came next, weighing 1.4kgs (3.1lbs), and finally Kate followed at just 1.3kgs (2.9lbs).
Joshua, also the longest of the trio, measured only 40cms (less than 16ins). They were put on breathing apparatus and constantly monitored until they were considered strong enough to leave Sunninghill Hospital in Johannesburg.
SkyNews