InterSystems is a software vendor specializing in high-performance database management, rapid application development, integration, and healthcare information systems. Founded in 1978 by Phillip T. (Terry) Ragon and headquartered in Boston, Massachusetts, the company surpassed $1 billion in annual revenue in 2023. Its technology manages healthcare records for an estimated one billion patients worldwide.

Products
The lineup spans the InterSystems IRIS Data Platform (the flagship combining database management, interoperability, and analytics), HealthShare (health informatics, launched 2006), TrakCare (modular healthcare information system, acquired 2007), Caché (the earlier database from 1997, now largely superseded by IRIS), and Ensemble (integration platform introduced 2003).

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