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Open Financial Exchange (OFX) is a freely-licensed unified specification for the electronic exchange of financial data through the Internet, and between or among financial institutions, businesses and customers. OFX is not a financial institution.
OFX was created by Microsoft, CheckFree and Intuit in 1997 by converging independently developed data exchange mechanisms. It is also currently used by many other firms to support financial data exchange for their products and services.
OFX versions 1.0 and 1.6 were extended from Extensible Markup Language (XML) and Standard Generalized Markup Language (SGML). This made them simple to use in creating well-formed OFX documents.
A proprietary variant is Intuit’s Quicken Financial Exchange (QFX). Its documentation uses the term OFX without distinguishing between the two. However, Intuit’s products only work with QFX.
The OFX specification supports a variety of financial activities including: