Wikipedia
DataFlex is a development tool for Windows and web applications.
It started as a relatively early example of a fully fledged and commercially used fourth-generation programming language (4GL). In its early forms, DataFlex was available for Unix, VAX/VMS, TurboDOS, Novell NetWare, CP/M, MS-DOS and OS/2 operating systems.
DataFlex is produced by the Data Access Worldwide located in Miami. The company was founded in 1976.
To date, DataFlex has lasted the course as a niche application development environment. The DataFlex product supports many database environments: Oracle, MS-SQL, IBM DB2, MySQL, PostgreSQL and Pervasive SQL as well as any ODBC database. DataFlex applications are used by around 3 million users worldwide.
As of June 2016 the version is 18.2