If you didn't know, VMware have a really useful website called the VMware Flings, this website also known as VMware Labs, contains useful utilities.
VMware have recently made available a newer version of the vSphere HTML5 Client (3.21)
The purpose of this client is to allow management of a VMware vCenter system via a HTML5 client, and allows flexibly of choice, as an administrator you can either use the vSphere Web Client or the vSphere HTML5 client.
For more details and download, visit VMware Labs Flings and also the HTML5 page
