Hello,
Please look into the below links:
https://www.g2.com/compare/densify-vs-vrealize-operations
https://www.peerspot.com/products/comparisons/densify_vs_vmware-aria-cost-powered-by-cloudhealth_vs_...
https://www.trustradius.com/products/vmware-aria-operations/reviews?qs=pros-and-cons#overview
Hope above links will help.