Embotics V-Scout is a free, agent-less tool for tracking and reporting on VMs in VMware VirtualCenter enabled environments.
 
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SolarWinds free VM Monitor is an ingenious desktop tool that continuously monitors a VMware ESX Server and its virtual machines, delivering the real-time monitoring of ESX Servers that you’ve been missing.
 
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A post-installation script for ESX Server that checks service console configuration, the TCP and DNS settings, and checks which scheduled services failed to launch. It also checks the NTP settings (including firewall) and shows you the time difference between the public NTP server and the host.
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