This Python project features a graphical user interface (GUI) countdown timer built using the 'tkinter' library. The application allows users to start, pause, resume, and quit the countdown timer. It includes a visual progress bar and displays a custom message when the countdown ends. Additionally, a sound notification is played upon completion for Windows users.

This Python project features a graphical user interface (GUI) countdown timer built using the 'tkinter' library. The application allows users to start, pause, resume, and quit the countdown timer. It includes a visual progress bar and displays a custom message when the countdown ends. Additionally, a sound notification is played upon completion for Windows users.