There is a difference though: VMware Capacity Planner is specific to VMware. 5nine Planner and Optimizer recommends the most suitable platform (VMware or Hyper-V) depending upon the size / type of the data center, application workloads and other technology and business factors. Does not have hosted components; End-user can do automated migration planning, virtual environment analysis and optimization for selected platform with integrated TCO/ROI, utilization trending and other reports.