The story
Founded by Mary Székely in 1981.1
Progress Software was co-founded by several MIT graduates, including Joseph W. Alsop, Clyde Kessel, and Chip Ziering in 1981. It was originally called Data Language Corporation.
In 1984, Data Language released its first commercial version of the PROGRESS ADE for Unix and the following year unveiled a version for MS-DOS. In 1987, the company had released PROGRESS software for computer networks and the VAX/VMS (a Digital Equipment platform) and CTOS/BTOS operating systems. At the same year, the company changed its name to Progress Software Corporation to reflect the name of its software.
From Wikipedia’s article on Progress Software, shared under CC BY-SA 4.0.6