Background The use of open source software in health informatics is increasingly advocated by authors in the literature . Although there is no clear evidence of the superiority of the current open source applications in the healthcare field the number of available open source applications online is growing and they are gaining greater prominence . This repertoire of open source options is of a great value for any future planner interested in adopting an electronic medical health record system whether selecting an existent application or building a new one . The following questions arise . How do the available open source options compare to each other with respect to functionality usability and security Can an implementer of an open source application find sufficient support both as a user and as a developer and to what extent Does the available literature provide adequate answers to such questions This review attempts to shed some light on these aspects . Objective The objective of this study is to provide more comprehensive guidance from an implementer perspective toward the available alternatives of open source healthcare software particularly in the field of electronic medical health records . Methods The design of this study is twofold . In the first part we profile the published literature on a sample of existent and active open source software in the healthcare area . The purpose of this part is to provide a summary of the available guides and studies relative to the sampled systems and to identify any gaps in the published literature with respect to our research questions . In the second part we investigate those alternative systems relative to a set of metrics by actually installing the software and reporting a hands on experience of the installation process usability as well as other factors . Results The literature covers many aspects of open source software implementation and utilization in healthcare practice . Roughly those aspects could be distilled into a basic taxonomy making the literature landscape more perceivable . Nevertheless the surveyed articles fall short of fulfilling the targeted objective of providing clear reference to potential implementers . The hands on study contributed a more detailed comparative guide relative to our set of assessment measures . Overall no system seems to satisfy an industry standard measure particularly in security and interoperability . The systems as software applications feel similar from a usability perspective and share a common set of functionality though they vary considerably in community support and activity . Conclusion More detailed analysis of popular open source software can benefit the potential implementers of electronic health medical records systems . The number of examined systems and the measures by which to compare them vary across studies but still rewarding insights start to emerge . Our work is one step toward that goal . Our overall conclusion is that open source options in the medical field are still far behind the highly acknowledged open source products in other domains e.g . operating systems market share . 


Summary: The categorization of literature articles suggests the lack of adequate information from an implementer perspective. A more elaborated hands on study of individual OSS can reveal useful information to potential implementers yielding better informed decisions. OSS in healthcare informatics still lag behind established open source systems in several aspects in particular security usability and developers support.