The command line tool to build, deploy and manage Cordova-based applications.
Once installed — via npm — you get to do stuff like this:
cordova create ~/KewlApp
cd ~/KewlApp
cordova platform add ios
cordova platform add android
cordova plugin add http://example.org/Kewlio-1.2.3.tar.gz
cordova build
Great to see how the Cordova Platform (formerly known as PhoneGap — which now is a distribution of Cordova) is maturing