|Borland C++ 3.1|
A retail copy of Borland C++ 3.1
Borland started out with Turbo C back in 1987. With version 2.0, it also started to offer a more 'professional' version, Borland C. Turbo C was significantly cheaper than Microsoft C, forcing Microsoft to release a Quick C product to compete for the lower end.
Borland even offered versions for 32bit OS/2, although they were incredibly expensive.
There was support for Windows 3.0 and 3.1, but during the early 32bit days Borland lagged behind, and Watcom C became a popular choice for 32bit MS-DOS based stuff.