Mac: Gatekeeper is a great way to lock down your Mac so only approved apps can be opened, but sometimes you need to circumvent that restriction. Six Colours points out a handy keyboard shortcut for doing just that. When Gatekeeper is fully enabled, you have to manually hop into System Preferences to approve an app not downloaded from the App Store or on Apple's pre-approved list. However, if you right-click (or Control+click) on the app, then select Open, you get the contextual menu to open up the app anyway. This saves you the trouble of hopping into the preferences pane. It's a nice workaround to that allows you to keep your system secure but still get past it easily when you need to.
Quick Tip: Override Gatekeeper with one click [Six Colours]