CustomTkinter

What it is

CustomTkinter is a modern and highly customizable Python UI library built upon the classic Tkinter. It offers enhanced aesthetics and flexibility, making it ideal for developers looking to create visually appealing applications without sacrificing functionality or ease of use.

CustomTkinter stands out as a lightweight, modern alternative to traditional Tkinter, offering enhanced visual design and customization options without the complexity of more feature-rich frameworks.

When it fits — and when it doesn’t

Known weaknesses

Each one links to the public issue, changelog or docs page it came from, where we have one.

1. 01

   Limited cross-platform consistency in appearance and behavior

   Widgets may look different or behave inconsistently across Windows, macOS, and Linux

2. 02

   Performance issues with complex UIs

   Applications with a large number of widgets can experience lag or slow response times

3. 03

   Small community and slower development pace compared to mature frameworks

   GitHub activity and issue resolution times indicate a less active developer community

4. 04

   Documentation lacks depth for advanced use cases

   Examples in the documentation are basic, lacking detailed explanations for complex scenarios

What it does well

• Modern and customizable UI components

• Enhanced visual design compared to traditional Tkinter

• Easy integration with existing Python applications

• Active community support and frequent updates

Pricing

Free tier

YesOpen source — free to use

Paid from

$0

Model

Flat rate

Enterprise plan

No

Pricing not independently confirmed — check the vendor’s page.