APTonCD is a application used to create a local repository in a DVD or CD disk.This is a handy tool for those who are not having internet connection to install or those who cannot download packages repeatedly.This is used to create a backup of all installed packages in your system.
Installation
To install APTtonCD type this in terminal.
sudo apt-get install aptoncd
To run APTonCD type this in terminal
sudo aptoncd
Or go to
System --> Administration --> APTonCD
Creating A Local Repository
1. STEP 1:
In the first screen select CREATE
This will open a screen with a list of installed packages.
1. STEP 2:
[NOTE: If you don't want to add any more packages you can go to step 3:]
If you want to add any more packages from any folder, you can click on ADD-->Folder button and select required folder. 
1. STEP 3:
Select the disk type as your size of data.
Click Apply.
Insert a blank disk and Select cd burner and burn the image.
Using Local Repository
Now you can use this local repository to install required packages.
1. STEP 1:
First insert the disk and add it to repositories in synaptic by following gide.
Open synaptic and go to Tools --> Repository
In that select ADD-CD-ROM at the right bottom.
Assuring that you had inserted the disk click
OK and CLOSE.
Refresh the repository list by clicking on RELOAD
Now you can install all your packages in Disk using synaptic