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InterSystems Corporation is a privately held vendor of software systems and technology for high-performance database management, rapid application development, integration, and healthcare information systems. The vendor's products include InterSystems IRIS Data Platform, Caché Database Management System, the InterSystems Ensemblecite-ref-1[1] integration platform, the HealthShare healthcare informatics platform and TrakCarecite-ref-2[2] healthcare information system,cite-ref-3[3] which is sold outside the United States.

InterSystems is based in Boston, Massachusetts.cite-ref-4[4] The company's revenue was $727 million in 2019.

• History

• Microsoft dispute

• References

• External links

InterSystems was founded in 1978 by Phillip T. (Terry) Ragon, its current CEO.cite-ref-5[5] The firm was one of the vendors of M-technology (aka MUMPS) systems, with a product called ISM-11 (an DSM-11 clone) for the DEC PDP-11 .cite-ref-1-6-0[6] Over the years, it acquired several other MUMPS implementations: DTM from Data Tree (1993); DSM from Digital (1995);cite-ref-7[7] and MSM from Micronetics (1998); making InterSystems the dominant M technology vendor.

The firm eventually started combining features from these products into one they called OpenM, then consolidated the technologies into a product, Caché, in 1997.cite-ref-2-8-0[8] At that time they stopped new development for all of their legacy M-based products (although the company still supports existing customers). They launched Ensemble, an integration platform, in 2003cite-ref-9[9] and HealthShare, a scalable health informatics platform, in 2006.cite-ref-10[10] In 2007, InterSystems purchased TrakHealth,cite-ref-2-8-1[8] an Australian vendor of TrakCare, a modular healthcare information system based on InterSystems technology. In May 2011, the firm launched Globals as a free database based on the multi-dimensional array storage technology used in Caché.cite-ref-11[11] In September 2011, InterSystems purchased Siemens Health Services (SHS) France from its parent company, Siemens.cite-ref-12[12] In September 2017, InterSystems announced InterSystems IRIS Data Platform, which, the company said, combines database management capabilities together with interoperability and analytics, as well as technologies such as sharding for performance.cite-ref-13[13]

On August 14, 2008, the Boston Globe reported that InterSystems was filing a lawsuit against Microsoft Corporation, another tenant in its Cambridge, Mass., headquarters, seeking to prevent Microsoft from expanding in the building. InterSystems also filed a lawsuit against building owner Equity Office Partners, a subsidiary of the Blackstone Group, "contending that it conspired with Microsoft to lease space that InterSystems had rights to, and sought to drive up rents in the process".cite-ref-14[14]

In 2010, CEO Terry Ragon led a coalition in Cambridge called Save Our Skyline to protest a city zoning change that would have allowed more signs on top of commercial buildings, partly in response to Microsoft's desire to put a sign on top of their shared building.cite-ref-15[15]

Both disputes were eventually settled, and Microsoft and InterSystems agreed to both put low signs only in front of the building at street level.

cite-note-11. ↑ "Ensemble".

cite-note-22. ↑ "TrakCare".

cite-note-33. ↑ "Database Management & Healthcare Information Systems | InterSystems". InterSystems Corporation. Retrieved 2018-01-08.

cite-note-44. ↑ "InterSystems Worldwide Offices". 28 July 2025.

cite-note-55. ↑ "Phillip T. (Terry) Ragon". intersystems.com. Retrieved 2020-01-12.

cite-note-1-66. ↑ citerefcoffey2014Coffey, Brendan (2014-07-18). "Little-known InterSystems grows to dominate an IT market in age of Obamacare". Washington Post. ISSN 0190-8286. Retrieved 2018-01-08.

cite-note-77. ↑ citereflarry-goelzjohn-paladino1999Larry Goelz; John Paladino (1999-05-31). "Cover Letter re DSM". Compaq. Retrieved 2021-01-24.

cite-note-2-88. ↑ "Who We Are". Archived from the original on August 8, 2014.

cite-note-99. ↑ "Intersystems Launches Ensemble - Comprehensive Integration Platform Enables Rapid Implementation | InterSystems Corporation". InterSystems Corporation. Retrieved 2018-01-08.

cite-note-1010. ↑ "InterSystems Introduces HealthShare - High Performance, Massively Scalable Information Delivery Framework Targets RHIOs, HIE Networks Forming Worldwide | InterSystems Corporation". InterSystems Corporation. Retrieved 2018-01-08.

cite-note-1111. ↑ "Globals".

cite-note-1212. ↑ "InterSystems Takes Healthcare IT Leadership Position in France | InterSystems Corporation". InterSystems Corporation. Retrieved 2018-01-08.

cite-note-1313. ↑ "InterSystems press release". 12 September 2017.

cite-note-1414. ↑ citerefross2008Ross, Casey (August 14, 2008). "For Microsoft, not all is neighborly in Cambridge". The Boston Globe. Retrieved 2008-10-25.

cite-note-1515. ↑ citerefirons2010Irons, Meghan (October 9, 2010). "Critics put city on notice over sign rules". boston.com. Retrieved 2016-04-06.

• InterSystems website