As you may know, Aptik is an open-source application that enables the users to easily perform and restore backups of PPAs, aplications and packages in Ubuntu, Linux Mint, Elementary OS and other Ubuntu derivates.
Via Aptik, the users are able to choose the exact packages, PPAs, software, icons and themes to be backed up, and easily restored, on a clean installation.
The latest version available is Aptik 1.6.6, which brings bug-fixes.
Up to date packages are available via some third party PPA, so installing the software on Ubuntu 15.10 Wily Werewolf, Ubuntu 14.04 Trusty Tahr, Linux Mint 17.x, Elementary OS 0.3 Freya and other Ubuntu derivative systems is easy.
Just add the PPA to your system, update the local repository index and install he aptik package:
$ sudo apt-add-repository ppa:teejee2008/ppa
$ sudo apt-get update
$ sudo apt-get install aptik
Optional, to remove aptik, do:
$ sudo apt-get remove aptik