DRS Doctor is a command line tool that can be used to diagnose DRS behaviour in VMware vCenter clusters. When run against a DRS enabled cluster, it records information regarding the state of the cluster, the work load distribution, DRS moves, etc., in an easy to read log format.
DRS Dump Insight
DRS Dump Insight is a service portal where users can upload drmdump files and it provides a summary of the DRS run, with a breakup of all the possible moves along with the changes in ESX hosts resource consumption before and after DRS run.
DRS Entitlement Viewer
DRS Entitlement Viewer is installed as a plugin to the vSphere client. It is currently only supported for the HTML5 based vSphere client.