Appriority is an easy to use tool for Mac OS X that simply makes
the app you're working in go faster by allowing you to optimize
the CPU load on your computer. Once fully configured, Appriority
works by suspending and resuming applications as you switch among
them. Inactive applications can be set for suspension which will
eliminate their CPU usage until you switch back to them. The
benefits of this are improved performance in the application you
currently have active, less battery power used while mobile, and
less heat produced by your computer.
The Free Market edition of Appriority also uses the renice command
to put the highest priority on the active application you are
currently working in. Open applications that are inactive will
automatically be reniced to a lower priority. Renicing is done
automatically as you switch among your open applications. (This
feature is not available in the Mac App Store edition).
Appriority tells you what applications are using the most cpu
resources and makes it easy to bring their usage to a halt. It
reports your average CPU load and more.
Appriority is designed to be easy to use and makes no permanent
changes to your system. Simply launch it to turn it on, and quit
it to return all of your applications to normal.