CustomTkinter
CustomTkinter is a free, open-source design and publishing app for Windows and macOS. A modern and customizable python UI-library based on Tkinter. It has 13,594 GitHub stars and is released under the MIT license. Its source code is on GitHub at TomSchimansky/CustomTkinter.
github.com/TomSchimansky/CustomTkinter (opens in a new tab)
Data as of from the GitHub API; description from the project's repository. Report an error
About CustomTkinter
CustomTkinter is a python UI-library based on Tkinter, which provides new, modern and fully customizable widgets. They are created and used like normal Tkinter widgets and can also be used in combination with normal Tkinter elements. The widgets and the window colors either adapt to the system appearance or the manually set mode ('light', 'dark'), and all CustomTkinter widgets and windows support HighDPI scaling (Windows, macOS). With CustomTkinter you'll get a consistent and modern look across all desktop platforms (Windows, macOS, Linux).
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Is CustomTkinter free and open source?
Yes. CustomTkinter's source code is public on GitHub under the MIT license, which is OSI-approved or FSF-free, so you can use, copy and change it for free.
How do I install CustomTkinter?
Download it from the repository or build it from source by following the README on GitHub.
Is CustomTkinter still maintained?
The repository's most recent commit was on Jun 24, 2026. appsgit only lists apps whose repository had a commit in the last six months.