Retail Solutions Inc.

Founded in 2003, Retail Solutions Inc is a software company based in Mountain View, CA that provides software-as-a-service products for data management, reporting and business intelligence, and point of sale applications. RSi was named by Forbes as the biggest SaaS company you've never heard of. The company started out selling radio-frequency identification software before moving into its current business. In October 2020, RSi was acquired by IRI Worldwide.

Source: Wikipedia