Tkinter is a standard GUI library for Python, and it is the most popular Python GUI framework. It is fast, easy-to-use, and provides a wide range of widgets, including buttons, labels, and text boxes.

The C#/.NET SDK reached v1.0.1 in December 2023, and the company has been working on the Python and Java versions since then, (see "Microsoft's Semantic Kernel SDK Ships with AI Agents, Plugins, ...