A transnational municipalism could reconfigure the struggles of social movements to build this geopolitics of the commons against neoliberalism. As the Spanish case demonstrates, the lever of change wielded by municipal governments who gained power thanks to new ways of working can give the reconfigured struggle for the commons a new institutional scalability. It is no coincidence that some Brazilian cities (such as Belo Horizonte and Rio de Janeiro) and US cities (building on the Occupy Wall Street movement) are studying how to replicate the model of Spain’s confluences. As long ago as 1984, Murray Bookchin’s thesis on libertarian municipalism 31 was already envisaging the possibility of a new scalable network of territories: “Interconnecting villages, neighbourhoods, towns and cities in confederal networks”. In the digital age, the confederation could be made up of inter-territorial, cooperative cities, against or without the state, going beyond the wellintentioned United Cities and Local Governments (UCLG) network, which still sees the ‘right to the city’ as the future. What is at stake is the life of neighbourhoods and, at the same time, the survival of democratic participation worldwide. The intermunicipal planet/neighbourhood, forever intertwined, may become the new cornerstone of global postcapitalism. Open source local government is the first step towards scaling up new public policy spheres and interwoven citizen practices that can make neoliberalism unnecessary. Code-sharing could reinvent global geopolitics and create a new horizon of transnational radical democracy.