Borland C may refer to:
Borland C++ is a C and C++ programming environment (that is, an integrated development environment) for MS-DOS and Microsoft Windows. It was the successor to Turbo C++, and included a better debugger, the Turbo Debugger, which was written in protected mode DOS.
Object Windows Library (OWL): A set of C++ classes to make it easier to develop professional graphical Windows applications.
Turbo Vision: A set of C++ classes to create professional applications in DOS. Those classes mimics some of the aspects of a Windows application like: dialog boxes, messages pumps, menus, accelerators, etc.
Borland Graphics Interface: A library of functions for doing simple, presentation-style 2D graphics. Drivers were included for generic CGA, EGA and VGA capability, with support for a limited number of video-modes, but more advanced, third-party drivers were also available.
Borland Power Pack for DOS: Used to create 16- and 32-bit protected mode DOS applications, which can access a limited scope of the Windows API and call functions in any Windows DLL.