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I’ve released the PySimpleGUI 5 code as open source. After removing licensing and security components, it’s now available under the LGPL3 license on GitHub and PyPI.

To install the latest version (v6):

If you need the older version (4.60.5.1):

The GitHub repo has the most up-to-date code. You can install directly without cloning:

I’m still wrapping up the transition from version 5 to 6, including the docs. After that, I’m honestly not sure what the long-term future looks like—but if the past 8 years are any indication, I’m not great at predicting it.

For now, I’m here and happy to help.

PySimpleGUI is a wrapper for tkinter (and other GUI libraries) that transforms the GUI SDK into a simpler, more compact architecture while still providing detailed customization. No prior GUI programming experience needed.

import PySimpleGUI as sg

layout = [[sg.Text("What's your name?")],

[sg.Input(key='-INPUT-')],

[sg.Text(size=(40,1), key='-OUTPUT-')],

[sg.Button('Ok'), sg.Button('Quit')]]

window = sg.Window('Window Title', layout)

while True:

event, values = window.read()

# See if user wants to quit or window was closed

if event == sg.WINDOW_CLOSED or event == 'Quit':

break

# Output a message to the window

window['-OUTPUT-'].update('Hello ' + values['-INPUT-'] + "! Thanks for trying PySimpleGUI")

window.close()

This is the window that's created.


Here's the same window after some user interaction.


You'll find **extensive** documentation at:

PySimpleGUI has always been developed more like a proprietary product than an open source project. Pull requests aren't accepted.


Seems most projects have something to say about AI usage now. This is my **opinion** and how I've decided to use AI. It's what's right for me. It might not be right for you or anyone else.

I use LLMs to search and summarize documentation, lookup errors, do research, get knowledge. I don't use LLMs to write code. My reason is very simple.

I fell in love with programming 50 years ago. Writing software is my happy place. Why would I give that to a computer to do instead of getting the enjoyment I get from doing it? AI can generate lots of things. The feeling I get writing software is not one of the things AI can generate.

I'm not in a hurry. If I wanted code written for me, I would have opened the project up to pull requests years ago, but I didn't because I wanted to write the code. It's fun!

A common question in software today is whether a library is still relevant. The answer is yes, people discover and install PySimpleGUI every day. GUI applications are often built incrementally. As features are added, layouts change, buttons move, and the code needs to evolve. That’s much easier when the code is understandable, whether it was written by a person or an AI initially.

I use PySimpleGUI regularly, and I can’t imagine building a Windows app without it. I’ve recently been working on a 6502 breadboard computer. I built a bus analyzer using a couple of Raspberry Pi Picos and a PySimpleGUI app to control everything from Windows. Coding up a windows application to be the front-end to my tools is very easy for me to do using PySimpleGUI.

That’s reason enough for me to keep working to clean up the ecosystem and keep it running well.

Copyright 2018-2026 PySimpleGUI. All rights reserved.

Licensed under LGPL3.