The story
SAPO was created on September 4, 1995, at the University of Aveiro by six students in the Center for Informatics of the university. The name originated from the acronym of the service, S.A.P. (Servidor de Apontadores Portugueses), which later evolved into Servidor de Apontadores Portugueses Online, giving rise to the acronym SAPO. Another factor in the name was Sapo Cocas, which is the European Portuguese name of Kermit the Frog.
In 1997, SAPO became the property of the company Navegante and began commercial operation. At some point, it became part of Altice Portugal.
From Wikipedia’s article on SAPO (company), shared under CC BY-SA 4.0.4