Speaker of the Parliament of Zimbabwe, Jacob Mudenda announced Mr Mugabe's resignation on Tuesday, November 21.
Asked if the ANC had any prior knowledge that Mugabe would be recalled‚ the secretary-general unreservedly denied this and said the party was taken aback, just like the rest of the world.
"In recent days we have seen the desire of the Zimbabwean people for free and fair elections and the opportunity to rebuild the country's economy under a legitimate government", she said in a statement.
Salil Shetty, secretary general of Amnesty International, said: "After more than three decades of violent repression, the way forward for the country is to renounce the abuses of the past and transition into a new era where the rule of law is respected and those who are responsible for injustices are held to account".
The resignation brought to an end Mugabe's 37-year grip on power and was received by wild celebrations by Zimbabweans.
South African Parliament also commended Zimbabwean institutions and citizens for their conduct during the problems the country faced.
South Africa's rand steadied against the dollar early on Wednesday, staying below the 14/$ mark breached in the previous session, thanks to a peaceful political transition in neighbouring Zimbabwe.
"That is the position we have taken because sometimes it's easy to stand up and say we are ready for renewal, and I always become very cautious when everybody celebrates - you must know there's something wrong".
He, however, discarded the possibility that the West may be behind the military intervention in Zimbabwe and the consequent pressure that forced the one-time war veteran to resign in such an infamous manner. Robert Mugabe squandered the huge potential of a remarkable country.