The document summarizes an open source event in 2009 about coordinating open source GIS projects in Spanish public administration. It discusses existing projects like gisEIEL and gvSIG and the formation of the SIGNERGIAS network to promote collaboration and interoperability between projects. The network held initial meetings in A Coruña, Girona, and Málaga to analyze difficulties and set rules to make collaboration easier. The goal was to avoid duplicating work and generate a research community through hands-on workshops rather than just presentations.