[jelambs]

Hi! I'm biased as one of the Stytch founders but wanted to share my POV in case it's helpful. As others mentioned, any of the open source options are not going to be low management overhead, but can be great in terms of cost and flexibility. I worked with Keycloak in a previous role and I think it's a really great option if you do go the open source route, just be prepared to spend time managing it.

> True multitenancy Many of the paid options you mentioned (workos, clerk, etc same goes for auth0) aren't actually multitenant, they've tacked on a concept of organizations to a user first data model. This presents some limitations as a result of users as the first class entity versus organizations, for example, membership across multiple organizations with different auth requirements (ie I can log into my personal with sign in with email/google but to log into a company account I need 2fa or SSO), multiple SSO connections per organization or a single SSO connection across multiple organizations (both common in enterprises where there's lots of M&A).

Happy to go into more detail on any of this or answer any specific questions you have!