PatientOS is an open source electronic medical record (EMR or EHR) for physician offices and clinics.

PatientOS version 0.81 has been released with a dramatically changed look and feel for the patient chart. The new setup provides greater flexibility for administrators to configure custom views, tables, forms and more. Inking has been enhanced from a user perspective as well as the tool to build inked forms.

Video overview of chart: http://www.patientos.org/software/video_files/v81/v081_overview.htm

Online demo http://www.patientos.org/features/demo.html