Corsego SaaS is authored by Yaroslav Shmarov from Corsego

You can use Corsego SaaS as a boilerplate for building a Ruby on Rails single-database multitenant applications with billing on organisation-level (not individual)

You can learn to build such applications on your own, as well as discover all my reasonings for this architecture in my Udemy Course

I have also released a bestseller Udemy Course Ruby on Rails 6: Learn 25+ gems and build a Startup MVP 2020