SAM Pro is a relatively new entrant in the SAM market, but in a very short period of time they have gone to become a leader in the Magic Quadrant per the Gartner June 2020 SAM Tools Report.
The ServiceNow® Software Asset Management (SAM) application systematically tracks, evaluates, and manages software licenses, compliance, and optimization. You can reclaim unused software rights, purchase new software rights, and manage allocations for entitlements.