OpenMRS

OpenMRS is a patient-based electronic medical record system focused on resource-constrained health care environments. It gives implementers a free, customizable EMR for digital patient records and is used by health care providers across many countries.

The core is a Java application with API, web, and webapp components, built with Maven and deployed as a WAR into a servlet container such as Tomcat or Jetty. A modular architecture lets developers add or remove modules for a specific implementation, drawing on the OpenMRS Add Ons repository. Search can run on the built-in Lucene index or an external ElasticSearch backend.

OpenMRS is built and maintained by a global community and licensed under MPL 2.0 with a Healthcare Disclaimer. Self-hosting follows a build-and-deploy model, with Docker Compose examples provided for local and production setups.