It's An Awesome GUI Built Using Python Tkinter.

You Can Use it in Your Tkinter Apps!

=> Here Are Some of the Best Features:

1 - Free to Use (Needs Credit)  
2 - Awesome UI  
3 - Open Source
4 - Automatic Last Window Screen Location Position
And Many More...

Images/gif Shown Above Are Only For Illustrative Purposes

Windows:

git clone https://github.com/sancho1952007/Modern-GUI-v3.0.git
cd Modern-GUI-v3.0
python main.pyw

Linux:

git clone https://github.com/sancho1952007/Modern-GUI-v3.0.git
cd Modern-GUI-v3.0
python3 main.pyw

To Use Custom Code, Edit The main.py File.

1) Modern GUI Requires Python 3 (Not Python 2) !
2) In Linux, Please Change All \\ to / In The main.py code.
3) Please Distribute The Modern-GUI-v3.0.txt With Your Tkinter App.