The micro, small and medium enterprises do important activities for all the countries in the world; in particular the scope of the software industry, representing the 99%. However, those enterprises present some resource problems on their delivery times and their product quality. In spite of the existence of frameworks, usually those enterprises do not incorporate them into their processes. In this article, we present a comparative study around the similarities and differences shared between 16 software process improvement frameworks for the MSMEs identified in the literature; the analysis is made with 9 proposed criteria that could be useful for the enterprises looking to incorporate frameworks into their workflows.