The Object Windows Library (OWL), Borland's alternative to MFC.

The Windows Template Library (WTL), a template-based extension to ATL and a replacement of MFC.

The Microsoft Foundation Classes (MFC), a C++ wrapper around the Windows API.

Zune (GUI toolkit) is an open source clone of MUI and the official toolkit for AROS.

ReAction: object-oriented GUI toolkit and the official toolkit for AmigaOS.

MUI: object-oriented GUI toolkit and the official toolkit for MorphOS.

This led to an evolution in which third-party developers each realised their own personal systems of classes.

BOOPSI (Basic Object Oriented Programming System for Intuition) was introduced with OS 2.0 and enhanced Intuition with a system of classes in which every class represents a single widget or describes an interface event.

High-level widget toolkits Widget toolkit comparison table

Since 2005, Microsoft has taken the graphics system out of Windows' kernel.

Also Workbench.library and Icon.library became disk based, and could be replaced with similar third-party solutions.

Since Amiga OS 2.0, Intuition.library became disk based and object oriented.

The Amiga OS Intuition was formerly present in the Amiga Kickstart ROM and integrated itself with a medium-high level widget library which invoked the Workbench Amiga native GUI.

Most contemporary toolkits, such as GTK or Qt, bypass them and use Xlib or XCB directly.

The X Window System contains primitive building blocks, called Xt or 'Intrinsics', but they are mostly only used by older toolkits such as: OLIT, Motif and Xaw.

is expected to drop binary and source compatibility with the BeOS at some point in the future, which will result in its own Haiku API.Īs a separate layer on top of the operating system

The Haiku operating system uses an extended and modernised version of the Be API that was used by its spiritual predecessor BeOS.

Microsoft had the graphics functions integrated in the kernel until 2006

The Windows API used in Microsoft Windows.

Mac OS9 and OS X use Carbon for 32-bit applications. Low-level widget toolkits Integrated in the operating system 2.2.2 Based on C++ (including bindings to other languages).

2.2.1 Based on C (including bindings to other languages).2.1.4 On Unix, under the X Window System.1.2 As a separate layer on top of the operating system.

Windows c gui library