1.Oracle Java 7 Update 40 (7u40) 

sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java7-installer

2.Appgrid,一款轻量级的 Ubuntu 软件中心替代品，你可以通过它轻松安装 Ubuntu via PPA 的软件应用。支持Ubuntu 13.10/13.04/12.04/12.10

sudo add-apt-repository ppa:appgrid/stable
sudo apt-get update
sudo apt-get install appgrid

3.Numix uTouch 图标主题(支持 Ubuntu 12.04, Ubuntu 12.10, Ubuntu 13.04, Ubuntu 13.10)

sudo add-apt-repository ppa:numix/ppa
sudo apt-get update
sudo apt-get install numix-icon-theme-utouch