Model Driven Engineering (MDE) encourages the use of graphical modeling tools, which facilitate the development process from modeling to coding. Such tools can be designed using the MDE approach into metamodeling environments called metaCASE tools. It turned out that the implementation of such tools is made by technologies which need as much effort as resources for modest results, requiring in most cases additional programming efforts for their adaptation. Some of these technologies are suffering from weaknesses especially in terms of reusability. In this context, this paper proposes an evaluation for modeling editors. It discusses the current state of the art, compares what was done in every tool that we evaluate; according to relevant criteria; and propose "MID": a set of metamodels supporting the easy specification of modeling editors by means of reusable components.