My college's paper was an ETL software that allows the city's public transport company to convert their excell's files into gtfs files. Gtfs files are the google format used to upload data into google maps. I did the database modeling and code, so thats what I uploaded. It became very popular in my city, bellow are the links. https://m.jcnet.com.br/Geral/2013/11/qual-circular-eu-devo-pegar.html http://www.youtube.com/watch?v=4X9JC5Y_RfI