PPA for:

Guayadeque:
sudo add-apt-repository ppa:anonbeat/guayadeque
sudo add-apt-repository ppa:tomtomtom/guayadeque

Sunflower:
sudo add-apt-repository ppa:atareao/sunflower

GCDemu
sudo add-apt-repository ppa:cdemu/ppa

VLC
sudo add-apt-repository ppa:n-muench/vlc

Double Commander
sudo add-apt-repository ppa:alexx2000/doublecmd

Dodge windows & minimze one click (Ubuntu 12.04)
sudo apt-add-repository ppa:ikarosdev/unity-revamped
sudo apt-get update
sudo apt-get upgrade