Ever hit ⌘Q and accidentally quit an application when you really meant to press ⌘W and close a window? It's a good way to lose your work and feel stupid at the same time. Luckily, there's now an app for that!
CommandQ is a small app that sits in your menubar and catches your accidental ⌘Q's. It does this by showing an overlay with a timer that gives you a short period of time to let go before your app quits. Just keeping hold down ⌘Q if you're sure you really want to quit.
CommandQ is smart, too. You can tell it to work with every app on your Mac or just a few specific ones.