The SIPA team worked with Fundación Corona to develop the empirical foundation for an open government adoption toolkit for municipal governments in Colombia. The goal of the research and toolkit are to bridge the gap between the national level goals for open government and municipal level implementation. This report provides a detailed explanation of the theoretical framework of open government as well as a history of its worldwide growth. The report provides an international benchmark of open government best practices by identifying successful international experiences with open government, particularly at the municipal level. It also considers opportunities for open government in Colombia including the strengths and weaknesses of current policy frameworks and initiatives. Finally, the report contains a comparative analysis of the common variables in each case study, a suggested empirical process for implementing open government initiatives at a local level, and a series of recommendations for how to begin the implementation process.