Growing research on Free/Libre Open Source Software (FLOSS) has addressed a variety of questions focusing on aspects ranging from open source development processes and developer motivation to economic and policy implications. Nevertheless, a few authors have examined the use of FLOSS and its implementation in organizations. Implementation studies represent a particularly promising area for information systems researchers who are still in the process of theorizing about the relationship between the distinctive properties of FLOSS and the processes of implementation and use. The goal of this paper is to present a taxonomy of FLOSS initiatives drawn on the outcomes of a previous study and to link the results with the multi-level framework defined by Niederman et al (2006). We also suggest a possible methodology to further investigate the possible combinations of organizational practices in order to achieve the expected benefits from FLOSS implementation.