from typing import List
from pathlib import Path


def find_window_classes() -> List[str]:
    """
    Find available window packages

    Returns:
        A list of avaialble window packages
    """
    return [
        path.parts[-1] for path in Path(__file__).parent.iterdir()
        if path.is_dir() and not path.parts[-1].startswith('__')
    ]