PPA List
Coolreader 3
sudo add-apt-repository ppa:vovansrnd/coolreader
(sudo apt-get update && sudo apt-get install cr3)
Gnome EncFS Manager
sudo add-apt-repository ppa:gencfsm
(sudo apt-get update && sudo apt-get install gnome-encfs-manager)
Everpad
sudo add-apt-repository ppa:nvbn-rm/ppa
(sudo apt-get update && sudo apt-get install everpad)
DeadBeef
sudo add-apt-repository ppa:ppa:starws-box/deadbeef-player
(sudo apt-get update && sudo apt-get install deadbeef)
Pinta Maintainers team
sudo add-apt-repository ppa:pinta-maintainers/pinta-stable
(sudo apt-get update && sudo apt-get install pinta)
Ubuntu Tweak
add-apt-repository ppa:tualatrix/ppa
(sudo apt-get update && sudo apt-get install ubuntu-tweak)