Determining the Geographical distribution of a Community by means of a Time-zone Analysis

Free/libre/open source software projects are usually developed by a geographically distributed community of developers and contributors. In contrast to traditional corporate environments, it is hard to obtain information about how the community is geographically distributed, mainly because participation is open to volunteers and in many cases it is just occasional. During the last years, specially with the increasing implication of institutions, non-profit organizations and companies, there is a growing interest in having information about the geographic location of developers. This is because projects want to be as global as possible, in order to attract new contributors, users and, of course, clients. In this paper we show a methodology to obtain the geographical distribution of a development community by analyzing the source code management system and the mailing lists they use.