PySimpleGUI
A simple to use GUI that can create custom GUIs
11 Alternatives To PySimpleGUI
Agar
Agar GUI
Blender
Blender is the open source, cross platform suite of tools for 3D creation.
FLTK
Fast Light Toolkit - Fast Light Toolkit (FLTK)
GTK
GTK+ is a multi-platform toolkit for creating graphical user interfaces.
JUCE
JUCE is a wide-ranging C++ class library for building rich cross-platform applications and plugins…
JavaFX
JavaFX is the next step in the evolution of Java as a rich client platform.
Nana C Library
Nana C++ Library - a modern C++ GUI library
PySide
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Qt
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Unity
The multiplatform game creation tools for everyone.
wxWidgets
wxWidgets: Cross-Platform GUI Library