Jane Street uses Excel-DNA.
“We migrated to ExcelDNA, which has simplified greatly our Excel interfacing. It is a superb product, superior to others we have used previously, and Govert is incredibly responsive and helpful in maintaining and improving it.” – Alberto Cherubini, EQ Finance
“ExcelDNA is in use in our major locations around the world and in many mission critical scenarios. Usage covers the full gamut of features from simple UDF add-ins to managing real-time trading flow, interacting with order management systems. The open source ExcelDNA project is incredibly useful to us. Thanks very much to Govert and contributors.” – Paul Gresham, Hong Kong.
“ExcelDNA is incredibly versatile and stable framework for building Excel add-ins and user-defined functions. With such a pivotal element in our project, we were very concerned about committing to ExcelDNA that was developed by an enthusiast. However, we quickly learned that Govert has created an outstanding open source project; that he is keen on helping with any challenging questions and that the community is active enough to sustain a healthy evolution of ExcelDNA.” – Ilya Vadeiko, FinDynamics