Windows only: Oddly named system utility Yawffer can freeze an out-of-control process in place, letting you shut down other running applications or save your work. Yawffer is actually meant to be a system monitoring tool, but it frankly doesn't do that terribly well-the killer feature is found by right-clicking on the tray icon and choosing Freeze a Process from the menu, at which point you can click on a process in the list and Freeze it. If you want to test this feature out for yourself but don't have a problem app at the moment, you can use Max CPU to peg your processor at 100%, and then freeze the process using Yawffer, which will immediately drop your CPU usage back to normal levels. This application could be a useful addition to your toolkit the next time your favourite Windows application goes out of control and you'd like to just pause it momentarily. For a more automated solution, you can use previously mentioned Process Lasso, or you can always free some memory by mastering Task Manager.