QuitsApps

QuitsApps is a system utility that was designed to assist you in quitting groups of applications automatically, but it can also be used to quit single apps as well.

When you launch it, QuitsApps will display a list of all the applications and related processes running. They will all be checked by default, and you can quit them all by clicking on the "Quit Apps" button in the bottom right corner of the screen. You can manually uncheck those that you don't want to quit, and there are buttons on the toolbar below the application list to check or uncheck all the items at once.

QuitsApps has a scheduling feature which can be quite useful. The way it works is almost identical to how you quit all the apps on the list. Instead of clicking on the "Quit Apps" button, you can set a quit time and start a timer in the bottom left corner of the screen.

By default, QuitsApps doesn't include system utilities, but you can add them to the list from the Preferences window. The app can also be configured to close itself after terminating all the apps and to automatically quit the flagged applications when QuitsApps is launched.

You should be careful when quitting certain apps and processes, though, because some others may need them to run. It happened to me that I closed an instance of Google Chrome by mistake, and, although the application wasn't closed, it became unresponsive and I had to force quit it.