It's a tool to quickly build up PHP virtual boxes using Vagrant and Puppet.
At work (the day job) we use Vagrant and Chef. But for Never Behind I don't have a full-time DevOps guy to create Vagrant configs for my smaller clients. puPHPet solves that problem.
So, no more FTP non-sense.
Thanks to Host Gator's SSH on the shared accounts, Bit Bucket's free private repos, Oracle's Virtual Box... and now PuPHPet using Vagrant and Puppet; Even for my smallest clients I can have the power of a full virtual dev environment.
Pretty Sweet.