VMware and Chef tools
Chef and VMware are a natural pairing and there are several tools available to enhance the integration.
Knife is a command-line tool that provides an interface between a local chef-repo and the Chef server and allows you to manipulate objects on the Chef server. Knife plugin allows your computer to talk to a 3rd party systems like vSphere or vRA. A plugin can create a VM in vSphere and then bootstrap it with Chef, for example, or it can expose your vRa catalog to your workstation so you don't need to use a GUI.
The following are the main interfaces with VMware and Chef our "knife" plugins.