The article presents a general model of crowdsourcing maturity (MGMC), focused on measuring the maturity of managerial, behavioral and technological aspects that support the activities of crowdsourcing in organizations. As methodology, it was used a systematic literature review, taking into account the low number of research publications and the low number of literature reviews prescribing practices of Crowdsourcing Maturity Models. It has been developed an assessment tool that accompanies this model to facilitate practical applications. The results of this study indicate that the maturity model developed can serve as a useful tool to describe and guide the efforts to implement such concept, providing a clear description of the current situation, and guidelines to follow. To assess its validity and improve generalization, future research can apply the Crowdsourcing Maturity Model proposal to different contexts