The best CustomTkinter alternatives
3 tools that do a similar job to CustomTkinter, 3 of them open source. Each entry says what it does and who it suits, so you can pick the one that fits instead of the most famous.
You're replacing
CustomTkinterA Python library that gives Tkinter GUIs a modern, customizable look, including dark mode.
- 1

Kivy
Open source · MIT · ★ 19k
Python framework for building cross-platform GUI apps, including mobile, desktop and embedded.
Best for: Python developers who want one codebase for desktop and mobile apps; Developers prototyping touch-friendly interfaces quickly
- 2

FTXUI
Open source · MIT · ★ 10.9k
A C++ library for building terminal user interfaces with no dependencies.
Best for: C++ developers who want interactive text-based tools in the terminal; Developers who want a library with no external dependencies
- 3

Mantine
Open source · MIT · ★ 31.9k
A React component library with 100+ UI components and 80+ hooks, MIT licensed.
Best for: React developers building web apps who want many components out of the box; Teams that want dark mode and theming support built in
How we pick: tools in the same category that solve the same problem, projects that name each other as alternatives, and open-source projects that describe themselves as an alternative to CustomTkinter. We don't take payment for placement.