This repository contains two gzip files with public WhatsApp groups collected from two Brazilian repositories, they are: Grupos de Zap - db_grupos_whats.json.gz Grupo de Whats - db_grupos_zap.json.gz The groups were collected on 01/2022. The files contain five properties: title: group title description: description of the group informed by the administrator created_date: creation date when the group was registered in the repository num_vizualization: times the group was seen on the site - only for the zap groups repository category: group category If you use this dataset cite your paper, please: "Click Here to Join": A Large-Scale Analysis of Topics Discussed by Brazilian Public Groups on WhatsApp Daniel Kansaon, Philipe Melo, and Fabrício Benevenuto. 2022. “Click Here to Join”: A Large-Scale Analysis of Topics Discussed by Brazilian Public Groups on WhatsApp. In Brazilian Symposium on Multimedia and Web (WebMedia ’22), November 7–11, 2022, Curitiba, Brazil. ACM, New York, NY, USA, 11 pages. https://doi.org/10.1145/3539637.3557056