No-code in the front, Python in the back. An open-source framework
Powerful and flexible toolkit for building Web APIs
Innovative user interfaces made easy
Build GUI for your Python program with JavaScript, HTML, and CSS
Slint is an open-source declarative GUI toolkit
Build beautiful web-based analytic apps, no JavaScript required
A wxWidgets GUI Builder
UI Automation Framework for Games and Apps
Clojure Desktop UI framework
A powerful and artistic UI library based on PyQt5
Graphical User Interface Toolkit for Python with minimal dependencies
A python based User Interface library.
Additional Graphical Classes and Widgets for Tkinter/Ttk
Apache Cayenne, Wicket, CXF, GWT, EJB examples as a framework