To create a

vSphere Client

plug-in, your development environment must include the following items.

A development environment capable of developing Web applications by using JavaScript and HTML.
A development environment capable of developing Java-based Web applications. You can use the Eclipse IDE or IntelliJ IDEA.
Access to an instance of
vCenter Server
for Windows or a
vCenter Server Appliance
instance to register your plug-in. Plug-in registration allows the
vSphere Client
to download and install the plug-in.

You can set up the

vSphere Client

SDK on a machine with Windows or Mac OS operating systems. Before you begin the SDK setup, you can set up your Java environment and Apache Ant, and install and configure the Eclipse IDE or IntelliJ IDEA.