The Open Data Capture Platform is an open-source software development project to provide a modern, easy-to-use, and secure platform for the continuous capture and storage of research and clinical research data in a structured and standardized manner. The platform allows clinical researchers to track the trajectories of participating patients across Douglas clinics. By capturing data continuously, clinics can track aggregate measures to better characterize service users and access internal performance. The platform serves as the foundation for implementing measurement-based care at the Douglas Institute.