The UTUTO Project is a non-profit volunteer organization that incubates other free software/knowledge projects from Argentina. They maintain a GNU/Linux distribution all translated to Spanish, they keep their own packages repository and you can search for packages on their site. The UTUTO community also maintains various documentation projects as well as a multimedia server.

Their distribution, UTUTO XS, is used in many countries in Latin American and also in Spain, it can be found at public computer labs, inside government officies or at the universities. North by South interviewed Daniel Oliveira who is part of the community that keeps UTUTO project going in Argentina and you can read it in English or the original in Spanish.