B2CK in partnership with Thymbra is now supporting GNU Health <http://health.gnu.org/>.
GNU Health is based on Tryton and is a free Health and Hospital Information System with the following functionality:
GNU Health (formely called Medical), is developed by Thymbra since 2008. Thymbra is an IT company specialised in ERP and medical informatics, active in europe and americas with offices in Spain and Argentina.