[0] https://stripe.com/payments/checkout
[1] https://stripe.com/docs/billing/subscriptions/customer-porta...
It's going to be open source and integrate authentication, payments and common growth & marketing tools (Google Analytics, Tag Manager, etc). Specifically, user registration + login, account recovery, subscriptions, payments (Stripe), team member invites...
Saasform is built with security and usability in mind. It's a standalone service including its own datastore, i.e. it's not a boilerplate, so you can build your SaaS with the tech stack you'd like, even serverless. All you need to do is to integrate Saasform authentication in your backend or functions.
Edit: elaborated.