Windows only: Killing runaway, memory-gobbling processes from Windows' task manager is easy—if you know the name of every process and thread on your system and which apps they match up with. Daphne, a free Windows process management utility, gives you a unique set of crosshairs to drag onto the window of any app giving you trouble. There's also a magnifying glass that reveals properties and even passwords of any window it stops on, and Daphne can call back to its DRK database to identify any apps you might want exlained. Daphne is a free download for Windows systems only. For more tools and tips on knocking down memory-grabbers, see our guide to mastering Windows' Task Manager.