OpenHIM is a health information mediator that aims to enable easier interoperability between disparate health information systems. It was developed as the Rwandan reference implementation of a health information exchange for maternal health, and is intended for use in low resource settings.
Zato is an Enterprise Service Bus (ESB) and app server written by pragmatists for pragmatists. It provides an HA load-balancer, hot-deployment, and hot-reconfiguration almost everywhere (forget server restarts). It has a browser-based GUI, CLI, and API (forget XML configuration). It supports many protocols, industry standards, and data formats, including HTTP, JSON, SOAP, REST, AMQP, JMS WebSphere MQ, ZeroMQ, Redis, SQL, and FTP.
Xenograte Community Toolkit is based on Xenograte, a platform which enables users to manage and orchestrate worker processes, and easily design the flow of data shared among them. Xenograte works either on one server or across multiple servers/clouds. The Toolkit provides a CLI and other resources for building, testing, and debugging worker processes, in Ruby, on a single machine. You can then easily weave these worker processes together into powerful integrations or automations.