VMware Labs released ESXTop Plugin for vSphere Web Client
Plugin is an enhanced, plugin-version of ESXtop for the vSphere Web Client. The plugin displays ESX server stats in new and more powerful ways by tapping into the GUI capabilities of the Web Client.
Separate tabs for CPU, memory, network and disk performance statistics
Flexible batch output
Flexible counter selection
Advanced data grid for displaying stats (sortable columns, expandable rows, etc.)
Configurable refresh rate
Embedded tooltip for counter description