| Subject | English | Portuguese |
| comp., MS, Braz. | base class library | biblioteca de classes base (A library that contains base classes) |
| comp., MS, Braz. | class library | biblioteca de classes (A library of classes, interfaces, and value types that are included in .NET Framework. This library provides access to system functionality and is designed to be the foundation on which .NET Framework applications, components, and controls are built) |
| comp., MS, Braz. | Microsoft Foundation Class Library | biblioteca Microsoft Foundation Class (A library of C++ classes that forms an object-oriented wrapper around large portions of the Windows API and provides a framework on which to build applications) |
| comp., MS | Microsoft Foundation Class Library A library of C++ classes that forms an object-oriented wrapper around large portions of the Windows API and provides a framework on which to build applications | biblioteca MFC (Microsoft Foundation Class) |
| comp., MS | .NET Framework class library | biblioteca de classes .NET Framework (A library of classes, interfaces, and value types that are included in .NET Framework. This library provides access to system functionality and is designed to be the foundation on which .NET Framework applications, components, and controls are built) |