The Sushi, what???
Sushi, huh? is a program that allows downloading all the packages needed to install the programs you want on GNU/Linux without an Internet connection on your own computer.
Sushi, huh? is designed for people, which for example can not afford monthly Internet connection.
As installing software on GNU/Linux is a hard and complex process for those newcomers to the world of GNU/Linux, which itself does not have an Internet connection, Sushi, huh? simplifies this task, making it as automatically as possible.

How to Install?
Sushi, huh? was not intended to be installed, Sushi, huh? was thought to be a portable application. That means you can save to a flash drive and use it without installing.

http://sushi-huh.sourceforge.net/