Launchpad can also be started by taking four fingers spread out and bringing them together into one spot. I think that is enabled by default. (Control panel, at

Launchpad can also be started by taking four fingers spread out and bringing them together into one spot. I think that is enabled by default. (Control panel, at least in older versions, also had a little animation for all the gestures, and you can assign different functions to them) You can also swipe up with three fingers to get a view of all the windows on your current desktop (and also select other Spaces). Normally I just use Cmd-Tab, but if your window is very visible this can be faster. I keep my source control app's window hidden behind Xcode, and then 3-swipe-up to click on it when I need to commit something.