ConectaPOA

The ConectaPOA has a list with multiple Wifi networks located in Porto Alegre - RS, which were public or private.
It features a map with marked networks to facilitate the location of the access point more easily.

Data is provided by the dynamic API Procempa available in DataPOA site.
Link website: http://datapoa.com.br/
Link API: http://datapoa.com.br/dataset/pontos-de-acesso-de-wi-fi-no-porto-alegre-livre

The data are provided by license:
Open License for Databases (ODbL) Open Data Commons