Ubuntu Tweaking & Configuration Tools

Compiz Config Setting Manager
Terminal:~$ sudo apt-get install compizconfig-settings-manager

D-Conf
Used as well as G-Conf.

Terminal:~$ sudo apt-get install dconf-tools

Gnome Advance Settings Tool
Terminal:~$ sudo apt-get install gnome-tweak-tool

MyUnity
Terminal:~$ sudo add-apt-repository ppa:myunity/ppa sudo apt-get update && sudo apt-get install myunity

Ubuntu Tweak
Terminal:~$ sudo add-apt-repository ppa:tualatrix/next sudo apt-get update && sudo apt-get install ubuntu-tweak

Unsettings
Similar to MyUnity but includes the option 'Reset to Default'.

Terminal:~$ sudo add-apt-repository ppa:diesch/testing sudo apt-get update && sudo apt-get install unsettings