vistafont-installer
This is a variant of http://plasmasturm.org/code/vistafonts-installer/ modified to work with Mac OS X.
Prerequisites
You need to have cabextract 1.2 or later installed. You can install this with Homebrew or MacPorts.
Installation
Run the following commands on the console:
curl -s https://cdn.jsdelivr.net/gh/atreides322/vistafont-installer@master/vistafonts-installer | bash