Hardware (custom-built) Startups

Dial Source, founded in 2005 by Josh Tillman as a college project, evolved from a research paper into a leading enterprise communications platform native to Salesforce and Microsoft Dynamics. The company grew to multiple millions in ARR before raising any funding, and has since raised $7M to expand its team and product offerings. Currently serving over 20,000 seats across enterprise clients with $1-2M in monthly recurring revenue and 121% year-over-year ACV growth, driven primarily by conferences and a strong land-and-expand strategy.