This tiny app quickly closes frozen programs, but clicking too fast or in the wrong spot could cause problems. One Click App Killer doesn't have a standard interface, as it simply turns your mouse pointer into a bull's-eye. Click anywhere on the frozen application's interface to quickly eliminate it from your screen and memory.
It is possible to click too fast and eliminate the wrong program, so proceed with a bit of caution. Also, clicking outside the frozen program's interface could close Windows. Thankfully, those problems are rare and can be avoided as long as you've got your trigger finger under control.