APTonCD is a backup tool with a graphical interface that you can create backup of all the packages installed using apt-get,synaptic,creating a removable repository that you can use on other computers.
To install APTonCD,run following command in terminal:
sudo apt-get install aptoncd
When installation finish,open the application at System->Administration->APTonCD.
You’ll see Create and Restore buttons in the window,you can also find them in Tools menu.
Click Create,this window pop up and all of installed packages will select in box automatically.
Click Add button to add more packages you want to backup,then click Burn to start.
If you want to restore the packages,click on Restore or Tools->Restore files.Put a CD into your CD-Rom or select the packages from an APTonCD media.