Quit All All running applications are stopped, except for the Finder, Automator and system applications.
To ensure that "Quit All" is always in the Dock, and to prevent any applications from being closed after you click on the icon accidentally, you will need to confirm at launch. If you have open documents that are not saved, Quit All will prompt you to save the changes. It requires Mac OS 10.4 or higher, and Automator installed.
Quit All is completely free. It is free to use and distribute.
Quit All is provided "as-is," without warranty. I am not responsible for any software or hardware damage that may occur from its use.