Check the compliance of your IT infrastructure against specific standards and best practices that are applicable for the environment. The Compliance Checker is a free, downloadable, fully-functional product for checking compliance of your environment to help you ensure that it remains secure and compliant.

Unlike other free tools in the market, VMware’s free Compliance Checker for vSphere is a fully-functional product that provides detailed compliance checks against the VMware vSphere Hardening Guidelines. For example, you can print Compliance Checker reports and run compliance checks across multiple ESX and ESXi servers at once.

http://www.vmware.com/products/datacenter-virtualization/vsphere-compliance-checker/