OpenMRS is a free, open-source eHealth program. All of the core resources used in OpenMRS are open source and freely available. OpenMRS is programmed in Java and the core application works through a web-browser. The back end database is currently in MySQL. OpenMRS platform supports EMR that can be customized to the needs of big or small clinical and research organizations. It's robust enough for a nationwide health care system, and nimble enough for a field-based clinic.Benefit from its open source platform, it has been widely adopted internationally.