The FOX toolkit is an open source, cross-platform widget toolkit, that is, a library of basic elements for building a graphical user interface (GUI).
Cost / License
- Free
- Open Source
Platforms
- Mac
- Windows
- Linux
Avalonia UI is described as 'Avalonia is a WPF-inspired cross-platform XAML-based UI framework providing a flexible styling system and supporting a wide range of platforms including: Windows, Linux (desktop & embedded), macOS, Android, iOS and Browser' and is an app. There are more than 25 alternatives to Avalonia UI for a variety of platforms, including Windows, Linux, Mac, BSD and Android apps. The best Avalonia UI alternative is Qt, which is both free and Open Source. Other great apps like Avalonia UI are Electron, Flutter, Qt Creator and Tauri.
The FOX toolkit is an open source, cross-platform widget toolkit, that is, a library of basic elements for building a graphical user interface (GUI).
Create Tkinter interfaces easily using a Drag-And-Drop editor. Includes Button, Labels, Entry, CheckBox, Listbox.

Elements C++ GUI is a modern C++ (esp. C++14 and C++17) UI library. Featuring resolution independence and HDPI support, with modularity as another focal point, the library is made for general purpose use while also covering everything needed for audio plugin development.



