There are a great number of differences between the two, and it is obvious that the vSphere Web client is where the future lies – VMware made it clear at VMworld that 5.1 will be the last release of the vSphere Client

Picture (c) by Marco Broeken.

But unfortunately there are things that have / will fall between the cracks – and functionality we are used to – is no longer available.

One such an example – controlling the current sessions connected to vCenter.

vSphere Client

vSphere Web Client

Just so that you know how to find it – because it is not where you would expect it.

vSphere Client

vSphere Web Client

Click on your vCenter –> Manage –> Sessions Tab

I expect we will see a number of these coming up in the near future.

But if you ask me – the change from the Windows Client to the vSphere Web Client is a great thing and something we all get used to – so you might as well start now.

Message of the day by the way can be found here in the Web Client:
(in case you want to broadcast something to your users)