Wubdepends is a tool that enables a user to download any package in the ubuntu repositories, its dependencies and every tier of its dependencies dependencies.
My name is Chris and I hope you find this tool useful! It is written in Python+GTK+Glade.
If you find this tool useful, please consider donating some money to the project to aid further development:
Download the .exe for windows and the source files so you can run wubdepends on linux and other platforms from here.
You can contact me on firstname.lastname@example.org