The Community Health Toolkit (CHT) is a project by a group of leading organizations who have come together to support the development of digital health initiatives in the hardest-to-reach areas. It provides a collection of open source technologies and open access design, technical, and implementer resources that help you build and deploy digital tools for community health. Together, we envision a world where healthcare is of the highest attainable quality, equitable, accessible, and delivered by people who are trusted in their communities. 

The interoperability within openIMIS and CHT is fully written as in Medic / CHT Feedback - Claim Subscription → openIMIS Interoperability .