We have been an active collective in Barcelona since 1998. We work on architecture and city wide issues from autonomy and direct action. We develop processes of citizen participation on recovery of the industrial and cultural fabric; temporary and permanent interventions in spaces and public buildings, and cases of self-construction from recycled materials. We conduct courses and workshops in different countries and we are passionate about co-learning situations. We promote and co-design digital tools, manuals and open-source guides for their application in processes related to participatory urbanism.