“When we first went to market, we were very focused on SaaS, our first vertical,” he told TC at the time. “Since then, over 3,000 companies have signed up to use our platform.” Those companies range from early-stage and bootstrapped with $200,000 in revenue, to publicly traded companies.

https://techcrunch.com/2021/03/31/pipe-which-aims-to-be-the-nasdaq-for-revenue-raises-more-money-at-a-2b-valuation/