Abstract—The information that can be used to analyze software systems is not limited to the raw source code, but also to any other artifact produced during its evolution. In our recent work we have focused on how archives of e-mails that concern a system can be exploited to enhance program comprehension. In this paper we present Miler, a tool we have built for that purpose. We describe its architecture and infrastructure, and the FAMIX meta-model extension we have devised to model mailing list archives. I