# List of platform-independent GUI libraries

This is a list of notable library packages implementing a graphical user interface (GUI) platform-independent GUI library (PIGUI). These can be used to develop software that can be ported to multiple computing platforms with no change to its source code.

## In C, C++

| Name | Owner | Platforms | License |
| Chromium Embedded Framework (CEF) | CEF Project Page | Linux, macOS, Microsoft Windows | Free: BSD |
| CEGUI | CEGUI team | Linux, macOS, Microsoft Windows | Free: MIT |
| Enlightenment Foundation Libraries (EFL) | Enlightenment.org | X11, Wayland, Microsoft Windows, macOS, DirectFB, Tizen | Free: BSD, LGPL, GPL |
| Fast Light Toolkit (FLTK) | Bill Spitzak, et al. | X11, Wayland, Microsoft Windows, macOS | Free: LGPL |
| GTK formerly GIMP Toolkit | GNOME Foundation | Linux (X11, Wayland), Microsoft Windows, macOS, HTML5 | Free: LGPL |
| IUP | Tecgraf, PUC-Rio | X11, GTK, Microsoft Windows | Free: MIT |
| JUCE | PACE Anti-Piracy Inc. | X11, Linux, macOS, iOS, Android, Microsoft Windows | Mixed: GPL, proprietary |
| LiveCode | LiveCode, Ltd. | X11, macOS, Microsoft Windows | Proprietary |
| Qt | Qt Project | Linux (X11, Wayland), OS/2, macOS, iOS, Android, Microsoft Windows, WebAssembly (partial) | Mixed: LGPL, GPL, or proprietary |
| U++ | U++ team | Linux (X11, GTK), macOS, Microsoft Windows | Free: BSD |
| wxWidgets formerly wxWindows | wxWidgets team | X11, Wayland, OpenLook, macOS, iOS, Microsoft Windows, OS/2 | Free: wxWindows |

## In other languages

| Name | Owner | Programming language | Platforms | License |
| Apache Flex Formerly Adobe Flex | Apache Software Foundation | ActionScript, Flash, Adobe AIR | Windows (x86, x64), macOS, Android (ARM, x86), iOS, Web (SWF) | Free: Apache |
| Apache Pivot | Apache Software Foundation | Java | Windows, macOS, Linux | Free: Apache |
| Avalonia | AvaloniaUI OÜ | C#, XAML, WASM | Windows, macOS, Linux, iOS, Android, Web (WebAssembly), Samsung Tizen | Free: MIT |
| Delphi, FireMonkey | Embarcadero Technologies | Object Pascal, Python | Windows, macOS, Linux, iOS, Android | Proprietary |
| Flutter | Google | C, C++, Dart | Windows, macOS, Linux, iOS, Android, Web | Free: New BSD License |
| Fyne | Open source | Go | Windows, macOS, Linux, BSD, Android, iOS (experimental: Web) | Free: New BSD License |
| Godot (game engine) | Open source | GDScript, C++, C#, GDNative | Linux, macOS, Windows, BSD, Haiku, iOS, Android, HTML5, WebAssembly, Xbox One, Universal Windows Platform, also useful for making GUI apps in VR (OpenXR and WebXR) | Free: MIT |
| PureBasic | Fantaisie Software | BASIC | Windows, Linux and OSX | Proprietary |
| JavaFX | Oracle Corporation | Java | Windows, Linux X11, macOS, Android, iOS | Free: CDDL, GPL with linking exception |
| Kivy | Kivy | Python | Linux, Windows, macOS, Android, iOS | Free: MIT |
| LCL, Lazarus | Open source | Free Pascal | Windows (Win32, Qt), Linux (GTK, Qt), macOS (Qt, Carbon, Cocoa) | Free: GPL, LGPL |
| Mono, GTK# | Xamarin | C# | Windows, Linux (X11, Wayland), macOS | Free: MIT, LGPLv2, GPLv2 (dual license) |
| Swing | Oracle Corporation | Java | Windows, Linux X11, macOS | Free: CDDL, GPL with linking exception |
| SWT | Eclipse Foundation | Java | Windows (Win32), Linux (GTK), macOS (Cocoa) | Free: Eclipse |
| Tcl/Tk | Open source | Tcl | Windows, OS/2, X11, OpenLook, Mac, Android | Free: BSD-style |
| Unity | Unity Technologies | C#, JavaScript, Boo | Windows, X11, macOS, Android, iOS also features cross-platform Web player | Proprietary, based on open-source |
| Uno Platform | nventive | C#, XAML, WASM | Windows, iOS, Android, Web (WebAssembly), experimental macOS | Free: Apache |
| VisualWorks | Cincom | Smalltalk | Windows, OS/2, Linux (X11), OpenLook, Mac | Proprietary |
| Xojo | Xojo, Inc. | Xojo | Windows, macOS, Linux (X11), iOS, web | Proprietary |
| LispWorks CAPI | LispWorks, Ltd. | Common Lisp | Windows, macOS, Linux (Gtk+), Motif | Proprietary |

## No longer available or supported

| Name | Owner | Comment |
| VisualAge | IBM | Discontinued by IBM in 2007. |
| AppWare | Novell | Has been de-emphasized (commonly viewed as dropped) by Novell |
| Open Interface | Neuron Data | One of the earliest PIGUI supported DOS, macOS, OS/2, VMS, Microsoft Windows 3.0 |
| Zinc Application Framework | Professional Software Associates | May still be supported, but no new sales |